php 加载并保存数组转储
加载并保存数组的压缩转储
<span style="color: #000000; font-weight: bold;">function</span> load_array_dump<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$filename</span><span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$fp</span> = <a href="http://www.php.net/fopen"><span style="color: #000066;">fopen</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$filename</span>,<span style="color: #ff0000;">"r"</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$content</span> = <a href="http://www.php.net/fread"><span style="color: #000066;">fread</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$fp</span>,<a href="http://www.php.net/filesize"><span style="color: #000066;">filesize</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$filename</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/fclose"><span style="color: #000066;">fclose</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$fp</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/eval"><span style="color: #000066;">eval</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'$array='</span>.<a href="http://www.php.net/gzuncompress"><span style="color: #000066;">gzuncompress</span></a><span style="color: #66cc66;">(</span><a href="http://www.php.net/stripslashes"><span style="color: #000066;">stripslashes</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$content</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span>.<span style="color: #ff0000;">';'</span><span style="color: #66cc66;">)</span>;
<span style="color: #b1b100;">return</span><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$array</span><span style="color: #66cc66;">)</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #000000; font-weight: bold;">function</span> save_array_dump<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$filename</span>, <span style="color: #0000ff;">$array</span><span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$dump</span> = <a href="http://www.php.net/addslashes"><span style="color: #000066;">addslashes</span></a><span style="color: #66cc66;">(</span><a href="http://www.php.net/gzcompress"><span style="color: #000066;">gzcompress</span></a><span style="color: #66cc66;">(</span><a href="http://www.php.net/var_export"><span style="color: #000066;">var_export</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$array</span>,<span style="color: #000000; font-weight: bold;">true</span><span style="color: #66cc66;">)</span>,<span style="color: #cc66cc;">9</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$fp</span> = <a href="http://www.php.net/fopen"><span style="color: #000066;">fopen</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$filename</span>, <span style="color: #ff0000;">"wb+"</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/fwrite"><span style="color: #000066;">fwrite</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$fp</span>, <span style="color: #0000ff;">$dump</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/fclose"><span style="color: #000066;">fclose</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$fp</span><span style="color: #66cc66;">)</span>;
<span style="color: #66cc66;">}</span>php 随机密码
使用给定字符生成随机密码。
<span style="color: #000000; font-weight: bold;">function</span> random_password<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$length</span>, <span style="color: #0000ff;">$characters</span>=<span style="color: #ff0000;">'abcdefgh1234567890'</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #b1b100;">if</span> <span style="color: #66cc66;">(</span><span style="color: #0000ff;">$characters</span> == <span style="color: #ff0000;">''</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span> <span style="color: #b1b100;">return</span> <span style="color: #ff0000;">''</span>; <span style="color: #66cc66;">}</span>
<span style="color: #0000ff;">$chars_length</span> = <a href="http://www.php.net/strlen"><span style="color: #000066;">strlen</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$characters</span><span style="color: #66cc66;">)</span><span style="color: #cc66cc;">-1</span>;
<a href="http://www.php.net/mt_srand"><span style="color: #000066;">mt_srand</span></a><span style="color: #66cc66;">(</span><span style="color: #66cc66;">(</span>double<span style="color: #66cc66;">)</span><a href="http://www.php.net/microtime"><span style="color: #000066;">microtime</span></a><span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>*<span style="color: #cc66cc;">1000000</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$pwd</span> = <span style="color: #ff0000;">''</span>;
<span style="color: #b1b100;">while</span><span style="color: #66cc66;">(</span><a href="http://www.php.net/strlen"><span style="color: #000066;">strlen</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$pwd</span><span style="color: #66cc66;">)</span> < <span style="color: #0000ff;">$length</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$rand_char</span> = <a href="http://www.php.net/mt_rand"><span style="color: #000066;">mt_rand</span></a><span style="color: #66cc66;">(</span><span style="color: #cc66cc;">0</span>, <span style="color: #0000ff;">$chars_length</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$pwd</span> .= <span style="color: #0000ff;">$characters</span><span style="color: #66cc66;">[</span><span style="color: #0000ff;">$rand_char</span><span style="color: #66cc66;">]</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #b1b100;">return</span> <span style="color: #0000ff;">$pwd</span>;
<span style="color: #66cc66;">}</span>php 文字链接
将纯链接转换为HTML链接
<span style="color: #000000; font-weight: bold;">function</span> text2links<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$str</span>=<span style="color: #ff0000;">''</span><span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span>
<span style="color: #b1b100;">if</span><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$str</span>==<span style="color: #ff0000;">''</span> or !<a href="http://www.php.net/preg_match"><span style="color: #000066;">preg_match</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'/(http|www<span style="color: #000099; font-weight: bold;">\.</span>|@)/i'</span>, <span style="color: #0000ff;">$str</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span> <span style="color: #b1b100;">return</span> <span style="color: #0000ff;">$str</span>; <span style="color: #66cc66;">}</span>
<span style="color: #0000ff;">$lines</span> = <a href="http://www.php.net/explode"><span style="color: #000066;">explode</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">"<span style="color: #000099; font-weight: bold;">\n</span>"</span>, <span style="color: #0000ff;">$str</span><span style="color: #66cc66;">)</span>; <span style="color: #0000ff;">$new_text</span> = <span style="color: #ff0000;">''</span>;
<span style="color: #b1b100;">while</span> <span style="color: #66cc66;">(</span><a href="http://www.php.net/list"><span style="color: #000066;">list</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$k</span>,<span style="color: #0000ff;">$l</span><span style="color: #66cc66;">)</span> = <a href="http://www.php.net/each"><span style="color: #000066;">each</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$lines</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span>
<span style="color: #808080; font-style: italic;">// replace links:</span>
<span style="color: #0000ff;">$l</span> = <a href="http://www.php.net/preg_replace"><span style="color: #000066;">preg_replace</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">"/([ <span style="color: #000099; font-weight: bold;">\t</span>]|^)www<span style="color: #000099; font-weight: bold;">\.</span>/i"</span>, <span style="color: #ff0000;">"<span style="color: #000099; font-weight: bold;">\\</span>1http://www."</span>, <span style="color: #0000ff;">$l</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$l</span> = <a href="http://www.php.net/preg_replace"><span style="color: #000066;">preg_replace</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">"/([ <span style="color: #000099; font-weight: bold;">\t</span>]|^)ftp<span style="color: #000099; font-weight: bold;">\.</span>/i"</span>, <span style="color: #ff0000;">"<span style="color: #000099; font-weight: bold;">\\</span>1ftp://ftp."</span>, <span style="color: #0000ff;">$l</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$l</span> = <a href="http://www.php.net/preg_replace"><span style="color: #000066;">preg_replace</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">"/(http:<span style="color: #000099; font-weight: bold;">\/</span><span style="color: #000099; font-weight: bold;">\/</span>[^ )<span style="color: #000099; font-weight: bold;">\r</span><span style="color: #000099; font-weight: bold;">\n</span>!]+)/i"</span>,
<span style="color: #ff0000;">"<a href=<span style="color: #000099; font-weight: bold;">\"</span><span style="color: #000099; font-weight: bold;">\\</span>1<span style="color: #000099; font-weight: bold;">\"</span>><span style="color: #000099; font-weight: bold;">\\</span>1</a>"</span>, <span style="color: #0000ff;">$l</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$l</span> = <a href="http://www.php.net/preg_replace"><span style="color: #000066;">preg_replace</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">"/(https:<span style="color: #000099; font-weight: bold;">\/</span><span style="color: #000099; font-weight: bold;">\/</span>[^ )<span style="color: #000099; font-weight: bold;">\r</span><span style="color: #000099; font-weight: bold;">\n</span>!]+)/i"</span>,
<span style="color: #ff0000;">"<a href=<span style="color: #000099; font-weight: bold;">\"</span><span style="color: #000099; font-weight: bold;">\\</span>1<span style="color: #000099; font-weight: bold;">\"</span>><span style="color: #000099; font-weight: bold;">\\</span>1</a>"</span>, <span style="color: #0000ff;">$l</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$l</span> = <a href="http://www.php.net/preg_replace"><span style="color: #000066;">preg_replace</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">"/(ftp:<span style="color: #000099; font-weight: bold;">\/</span><span style="color: #000099; font-weight: bold;">\/</span>[^ )<span style="color: #000099; font-weight: bold;">\r</span><span style="color: #000099; font-weight: bold;">\n</span>!]+)/i"</span>,
<span style="color: #ff0000;">"<a href=<span style="color: #000099; font-weight: bold;">\"</span><span style="color: #000099; font-weight: bold;">\\</span>1<span style="color: #000099; font-weight: bold;">\"</span>><span style="color: #000099; font-weight: bold;">\\</span>1</a>"</span>, <span style="color: #0000ff;">$l</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$l</span> = <a href="http://www.php.net/preg_replace"><span style="color: #000066;">preg_replace</span></a><span style="color: #66cc66;">(</span>
<span style="color: #ff0000;">"/([-a-z0-9_]+(<span style="color: #000099; font-weight: bold;">\.</span>[_a-z0-9-]+)*@([a-z0-9-]+(<span style="color: #000099; font-weight: bold;">\.</span>[a-z0-9-]+)+))/i"</span>,
<span style="color: #ff0000;">"<a href=<span style="color: #000099; font-weight: bold;">\"</span>mailto:<span style="color: #000099; font-weight: bold;">\\</span>1<span style="color: #000099; font-weight: bold;">\"</span>><span style="color: #000099; font-weight: bold;">\\</span>1</a>"</span>, <span style="color: #0000ff;">$l</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$new_text</span> .= <span style="color: #0000ff;">$l</span>.<span style="color: #ff0000;">"<span style="color: #000099; font-weight: bold;">\n</span>"</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #b1b100;">return</span> <span style="color: #0000ff;">$new_text</span>;
<span style="color: #66cc66;">}</span>php 数组删除空条目
以递归方式从数组中删除空条目
<span style="color: #000000; font-weight: bold;">function</span> array_remove_empty<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$arr</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$narr</span> = <a href="http://www.php.net/array"><span style="color: #000066;">array</span></a><span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>;
<span style="color: #b1b100;">while</span><span style="color: #66cc66;">(</span><a href="http://www.php.net/list"><span style="color: #000066;">list</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$key</span>, <span style="color: #0000ff;">$val</span><span style="color: #66cc66;">)</span> = <a href="http://www.php.net/each"><span style="color: #000066;">each</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$arr</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #b1b100;">if</span> <span style="color: #66cc66;">(</span><a href="http://www.php.net/is_array"><span style="color: #000066;">is_array</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$val</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$val</span> = array_remove_empty<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$val</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// does the result array contain anything?</span>
<span style="color: #b1b100;">if</span> <span style="color: #66cc66;">(</span><a href="http://www.php.net/count"><span style="color: #000066;">count</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$val</span><span style="color: #66cc66;">)</span>!=<span style="color: #cc66cc;">0</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #808080; font-style: italic;">// yes :-)</span>
<span style="color: #0000ff;">$narr</span><span style="color: #66cc66;">[</span><span style="color: #0000ff;">$key</span><span style="color: #66cc66;">]</span> = <span style="color: #0000ff;">$val</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #66cc66;">}</span>
<span style="color: #b1b100;">else</span> <span style="color: #66cc66;">{</span>
<span style="color: #b1b100;">if</span> <span style="color: #66cc66;">(</span><a href="http://www.php.net/trim"><span style="color: #000066;">trim</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$val</span><span style="color: #66cc66;">)</span> != <span style="color: #ff0000;">""</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$narr</span><span style="color: #66cc66;">[</span><span style="color: #0000ff;">$key</span><span style="color: #66cc66;">]</span> = <span style="color: #0000ff;">$val</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #66cc66;">}</span>
<span style="color: #66cc66;">}</span>
<a href="http://www.php.net/unset"><span style="color: #000066;">unset</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$arr</span><span style="color: #66cc66;">)</span>;
<span style="color: #b1b100;">return</span> <span style="color: #0000ff;">$narr</span>;
<span style="color: #66cc66;">}</span>php 随机句
这个例子展示了如何创建随机（非）有意义的句子:-) <br/> <br/> <br/> $ <br/> <b>以下是一些示例输出语句：</ b> <br/> <br/> <br/>这些狗是黄色的。<br/> <br/>这些车是致命的巨大!!这是一个致命的酷刑！<br / > <br/>这是一个毛茸茸的句子！<br/> <br/>这些猴子致命无聊！<br/> <br/>这些例子非常愚蠢* lol * <br/> <br/>这个是另一只猴子狗！？<br/> <br/> <br/> <br/> <small>顺便说一句：这也适用于德语句子： - ）</ small>
<span style="color: #808080; font-style: italic;">//</span>
<span style="color: #808080; font-style: italic;">// A list of sentences:</span>
<span style="color: #808080; font-style: italic;">// </span>
<span style="color: #808080; font-style: italic;">// %something ==> is a variable </span>
<span style="color: #808080; font-style: italic;">//</span>
<span style="color: #0000ff;">$r_sentences</span> = <span style="color: #ff0000;">'
This is a %adjective %noun %sentence_ending
This is another %noun %noun %sentence_ending
I %love_or_hate %nouns , because it is %adjective %sentence_ending
My %family says you are not %adjective %sentence_ending
These %nouns are %adjective %sentence_ending
'</span>;
<span style="color: #808080; font-style: italic;">//</span>
<span style="color: #808080; font-style: italic;">// This is another list of variables:</span>
<span style="color: #808080; font-style: italic;">// (This list can also contain variables (like %something))</span>
<span style="color: #808080; font-style: italic;">//</span>
<span style="color: #808080; font-style: italic;">// Formatting:</span>
<span style="color: #808080; font-style: italic;">// (first-line) = Variablename</span>
<span style="color: #808080; font-style: italic;">// (second-line) = Variables (seperated by semicolon)</span>
<span style="color: #808080; font-style: italic;">//</span>
<span style="color: #0000ff;">$r_variables</span> = <span style="color: #ff0000;">'
adjective
%adjective_list;very %adjective_list;deadly %adjective_list
adjective_list
big;huge;small;red;blue;cool;yellow;pink;fluffy;stupid;clever;fat;lazy;boring
noun
%noun_list;%adjective %noun_list
noun_list
sentence;beer;cow;monkey;donkey;example;ice cream;dog
nouns
beers;monkeys;donkeys;examples;cars;trees;birds;dogs
love_or_hate
love;hate;like
family
%adjective %family_members;%family_members
family_members
grandpa;brother;sister;mom;dad;grandma
sentence_ending
.;!;!!;!?;*lol*
'</span>;
<span style="color: #808080; font-style: italic;">// strip spaces:</span>
<span style="color: #0000ff;">$r_sentences</span> = <a href="http://www.php.net/trim"><span style="color: #000066;">trim</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$r_sentences</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$r_variables</span> = <a href="http://www.php.net/trim"><span style="color: #000066;">trim</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$r_variables</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// fix new lines and split sentences up:</span>
<span style="color: #0000ff;">$r_sentences</span> = <a href="http://www.php.net/str_replace"><span style="color: #000066;">str_replace</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">"<span style="color: #000099; font-weight: bold;">\r</span><span style="color: #000099; font-weight: bold;">\n</span>"</span>, <span style="color: #ff0000;">"<span style="color: #000099; font-weight: bold;">\n</span>"</span>, <span style="color: #0000ff;">$r_sentences</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$r_sentences</span> = <a href="http://www.php.net/str_replace"><span style="color: #000066;">str_replace</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">"<span style="color: #000099; font-weight: bold;">\r</span>"</span>, <span style="color: #ff0000;">"<span style="color: #000099; font-weight: bold;">\n</span>"</span>, <span style="color: #0000ff;">$r_sentences</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$r_sentences</span> = <a href="http://www.php.net/explode"><span style="color: #000066;">explode</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">"<span style="color: #000099; font-weight: bold;">\n</span>"</span>, <span style="color: #0000ff;">$r_sentences</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$r_variables</span> = <a href="http://www.php.net/str_replace"><span style="color: #000066;">str_replace</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">"<span style="color: #000099; font-weight: bold;">\r</span><span style="color: #000099; font-weight: bold;">\n</span>"</span>, <span style="color: #ff0000;">"<span style="color: #000099; font-weight: bold;">\n</span>"</span>, <span style="color: #0000ff;">$r_variables</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$r_variables</span> = <a href="http://www.php.net/str_replace"><span style="color: #000066;">str_replace</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">"<span style="color: #000099; font-weight: bold;">\r</span>"</span>, <span style="color: #ff0000;">"<span style="color: #000099; font-weight: bold;">\n</span>"</span>, <span style="color: #0000ff;">$r_variables</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$r_variables</span> = <a href="http://www.php.net/explode"><span style="color: #000066;">explode</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">"<span style="color: #000099; font-weight: bold;">\n</span><span style="color: #000099; font-weight: bold;">\n</span>"</span>, <span style="color: #0000ff;">$r_variables</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// this array contains all variables:</span>
<span style="color: #0000ff;">$r_vars</span> = <a href="http://www.php.net/array"><span style="color: #000066;">array</span></a><span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// go trough all variables:</span>
<span style="color: #b1b100;">for</span><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$x</span>=<span style="color: #cc66cc;">0</span>; <span style="color: #0000ff;">$x</span> < <a href="http://www.php.net/count"><span style="color: #000066;">count</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$r_variables</span><span style="color: #66cc66;">)</span>; <span style="color: #0000ff;">$x</span>++<span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$var</span> = <a href="http://www.php.net/explode"><span style="color: #000066;">explode</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">"<span style="color: #000099; font-weight: bold;">\n</span>"</span>, <a href="http://www.php.net/trim"><span style="color: #000066;">trim</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$r_variables</span><span style="color: #66cc66;">[</span><span style="color: #0000ff;">$x</span><span style="color: #66cc66;">]</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// lowecase all:</span>
<span style="color: #0000ff;">$key</span> = <a href="http://www.php.net/strtolower"><span style="color: #000066;">strtolower</span></a><span style="color: #66cc66;">(</span><a href="http://www.php.net/trim"><span style="color: #000066;">trim</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$var</span><span style="color: #66cc66;">[</span><span style="color: #cc66cc;">0</span><span style="color: #66cc66;">]</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// split words:</span>
<span style="color: #0000ff;">$words</span> = <a href="http://www.php.net/explode"><span style="color: #000066;">explode</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">";"</span>, <a href="http://www.php.net/trim"><span style="color: #000066;">trim</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$var</span><span style="color: #66cc66;">[</span><span style="color: #cc66cc;">1</span><span style="color: #66cc66;">]</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// add variables to the $r_vars Array</span>
<span style="color: #0000ff;">$r_vars</span><span style="color: #66cc66;">[</span><span style="color: #0000ff;">$key</span><span style="color: #66cc66;">]</span> = <span style="color: #0000ff;">$words</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #808080; font-style: italic;">// returns a word from the variables array:</span>
<span style="color: #000000; font-weight: bold;">function</span> get_word<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$key</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<a href="http://www.php.net/global"><span style="color: #000066;">global</span></a> <span style="color: #0000ff;">$r_vars</span>;
<span style="color: #b1b100;">if</span> <span style="color: #66cc66;">(</span><a href="http://www.php.net/isset"><span style="color: #000066;">isset</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$r_vars</span><span style="color: #66cc66;">[</span><span style="color: #0000ff;">$key</span><span style="color: #66cc66;">]</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$words</span> = <span style="color: #0000ff;">$r_vars</span><span style="color: #66cc66;">[</span><span style="color: #0000ff;">$key</span><span style="color: #66cc66;">]</span>;
<span style="color: #808080; font-style: italic;">// calc max.</span>
<span style="color: #0000ff;">$w_max</span> = <a href="http://www.php.net/count"><span style="color: #000066;">count</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$words</span><span style="color: #66cc66;">)</span><span style="color: #cc66cc;">-1</span>;
<span style="color: #0000ff;">$w_rand</span> = <a href="http://www.php.net/rand"><span style="color: #000066;">rand</span></a><span style="color: #66cc66;">(</span><span style="color: #cc66cc;">0</span>, <span style="color: #0000ff;">$w_max</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// return the word, and check if the word contains</span>
<span style="color: #808080; font-style: italic;">// another variable:</span>
<span style="color: #b1b100;">return</span> replace_words<span style="color: #66cc66;">(</span><a href="http://www.php.net/trim"><span style="color: #000066;">trim</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$words</span><span style="color: #66cc66;">[</span><span style="color: #0000ff;">$w_rand</span><span style="color: #66cc66;">]</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #b1b100;">else</span> <span style="color: #66cc66;">{</span>
<span style="color: #808080; font-style: italic;">// the word was not found :-(</span>
<span style="color: #b1b100;">return</span> <span style="color: #ff0000;">"(Error: Word '$key' was not found!)"</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #66cc66;">}</span>
<span style="color: #808080; font-style: italic;">// this function replaces a variable like %something with</span>
<span style="color: #808080; font-style: italic;">// the proper variable-value:</span>
<span style="color: #000000; font-weight: bold;">function</span> replace_words<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$sentence</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #808080; font-style: italic;">// if there are no variables in the sentence,</span>
<span style="color: #808080; font-style: italic;">// return it without doing anything</span>
<span style="color: #b1b100;">if</span> <span style="color: #66cc66;">(</span><a href="http://www.php.net/str_replace"><span style="color: #000066;">str_replace</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'%'</span>, <span style="color: #ff0000;">''</span>, <span style="color: #0000ff;">$sentence</span><span style="color: #66cc66;">)</span> == <span style="color: #0000ff;">$sentence</span><span style="color: #66cc66;">)</span>
<span style="color: #b1b100;">return</span> <span style="color: #0000ff;">$sentence</span>;
<span style="color: #808080; font-style: italic;">// split the words up:</span>
<span style="color: #0000ff;">$words</span> = <a href="http://www.php.net/explode"><span style="color: #000066;">explode</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">" "</span>, <span style="color: #0000ff;">$sentence</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$new_sentence</span> = <a href="http://www.php.net/array"><span style="color: #000066;">array</span></a><span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// go trough all words:</span>
<span style="color: #b1b100;">for</span><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$w</span>=<span style="color: #cc66cc;">0</span>; <span style="color: #0000ff;">$w</span> < <a href="http://www.php.net/count"><span style="color: #000066;">count</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$words</span><span style="color: #66cc66;">)</span>; <span style="color: #0000ff;">$w</span>++<span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$word</span> = <a href="http://www.php.net/trim"><span style="color: #000066;">trim</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$words</span><span style="color: #66cc66;">[</span><span style="color: #0000ff;">$w</span><span style="color: #66cc66;">]</span><span style="color: #66cc66;">)</span>;
<span style="color: #b1b100;">if</span> <span style="color: #66cc66;">(</span><span style="color: #0000ff;">$word</span> != <span style="color: #ff0000;">''</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #808080; font-style: italic;">// is this word a variable?</span>
<span style="color: #b1b100;">if</span> <span style="color: #66cc66;">(</span><a href="http://www.php.net/preg_match"><span style="color: #000066;">preg_match</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'/^%(.*)$/'</span>, <span style="color: #0000ff;">$word</span>, <span style="color: #0000ff;">$m</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #808080; font-style: italic;">// --> yes</span>
<span style="color: #0000ff;">$varkey</span> = <a href="http://www.php.net/trim"><span style="color: #000066;">trim</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$m</span><span style="color: #66cc66;">[</span><span style="color: #cc66cc;">1</span><span style="color: #66cc66;">]</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// get the proper word from the variable list:</span>
<span style="color: #0000ff;">$new_sentence</span><span style="color: #66cc66;">[</span><span style="color: #66cc66;">]</span> = get_word<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$varkey</span><span style="color: #66cc66;">)</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #b1b100;">else</span> <span style="color: #66cc66;">{</span>
<span style="color: #808080; font-style: italic;">// --> no it is a default word</span>
<span style="color: #0000ff;">$new_sentence</span><span style="color: #66cc66;">[</span><span style="color: #66cc66;">]</span> = <span style="color: #0000ff;">$word</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #66cc66;">}</span>
<span style="color: #66cc66;">}</span>
<span style="color: #808080; font-style: italic;">// join the array to a new sentence:</span>
<span style="color: #b1b100;">return</span> <a href="http://www.php.net/implode"><span style="color: #000066;">implode</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">" "</span>, <span style="color: #0000ff;">$new_sentence</span><span style="color: #66cc66;">)</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #808080; font-style: italic;">// calc. max.</span>
<span style="color: #0000ff;">$max_s</span> = <a href="http://www.php.net/count"><span style="color: #000066;">count</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$r_sentences</span><span style="color: #66cc66;">)</span><span style="color: #cc66cc;">-1</span>;
<span style="color: #0000ff;">$rand_s</span> = <a href="http://www.php.net/rand"><span style="color: #000066;">rand</span></a><span style="color: #66cc66;">(</span><span style="color: #cc66cc;">0</span>, <span style="color: #0000ff;">$max_s</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// get a random sentence:</span>
<span style="color: #0000ff;">$sentence</span> = <span style="color: #0000ff;">$r_sentences</span><span style="color: #66cc66;">[</span><span style="color: #0000ff;">$rand_s</span><span style="color: #66cc66;">]</span>;
<span style="color: #808080; font-style: italic;">// format the resulting sentence, so that I looks nice:</span>
<span style="color: #808080; font-style: italic;">// (delete whitespace infront of punctuation marks)</span>
<span style="color: #0000ff;">$sentence</span> = <a href="http://www.php.net/str_replace"><span style="color: #000066;">str_replace</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">' ,'</span>, <span style="color: #ff0000;">','</span>, <a href="http://www.php.net/ucfirst"><span style="color: #000066;">ucfirst</span></a><span style="color: #66cc66;">(</span>replace_words<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$sentence</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$sentence</span> = <a href="http://www.php.net/str_replace"><span style="color: #000066;">str_replace</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">' .'</span>, <span style="color: #ff0000;">'.'</span>, <span style="color: #0000ff;">$sentence</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$sentence</span> = <a href="http://www.php.net/str_replace"><span style="color: #000066;">str_replace</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">' !'</span>, <span style="color: #ff0000;">'!'</span>, <span style="color: #0000ff;">$sentence</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$sentence</span> = <a href="http://www.php.net/str_replace"><span style="color: #000066;">str_replace</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">' ?'</span>, <span style="color: #ff0000;">'?'</span>, <span style="color: #0000ff;">$sentence</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$sentence</span> = <a href="http://www.php.net/trim"><span style="color: #000066;">trim</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$sentence</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// finally print the new sentence! :-D</span>
<a href="http://www.php.net/print"><span style="color: #000066;">print</span></a> <span style="color: #0000ff;">$sentence</span>;php 修改HTTP标头（示例）
许多示例显示如何使用PHP的$ href=\"http://www.php.net/header\"> header（）</a>函数<br/> <br/> <br/> <br/> <b>提示：</ b> <br/> <br/>如果您想检查标题，可以使用基于网络的工具，例如：<br/> <a href =“http：// web- sniffer.net/\">web-sniffer.net </a>，<br/>网络浏览器扩展（例如<a href=\"http://livehttpheaders.mozdev.org/\"> LiveHTTPHeaders </ a>，<br/> <a href=\"http://www.blunck.se/iehttpheaders/iehttpheaders.html\"> ieHTTPHeaders </a>）或<br/>另一个第三方软件工具。
<span style="color: #808080; font-style: italic;">// See related links for more status codes</span>
<span style="color: #808080; font-style: italic;">// Use this header instruction to fix 404 headers</span>
<span style="color: #808080; font-style: italic;">// produced by url rewriting...</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'HTTP/1.1 200 OK'</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// Page was not found:</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'HTTP/1.1 404 Not Found'</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// Access forbidden:</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'HTTP/1.1 403 Forbidden'</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// The page moved permanently should be used for</span>
<span style="color: #808080; font-style: italic;">// all redrictions, because search engines know</span>
<span style="color: #808080; font-style: italic;">// what's going on and can easily update their urls.</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'HTTP/1.1 301 Moved Permanently'</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// Server error</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'HTTP/1.1 500 Internal Server Error'</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// Redirect to a new location:</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Location: http://www.example.org/'</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// Redriect with a delay:</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Refresh: 10; url=http://www.example.org/'</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/print"><span style="color: #000066;">print</span></a> <span style="color: #ff0000;">'You will be redirected in 10 seconds'</span>;
<span style="color: #808080; font-style: italic;">// you can also use the HTML syntax:</span>
<span style="color: #808080; font-style: italic;">// <meta http-equiv="refresh" content="10;http://www.example.org/ /></span>
<span style="color: #808080; font-style: italic;">// override X-Powered-By value</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'X-Powered-By: PHP/4.4.0'</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'X-Powered-By: Brain/0.6b'</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// content language (en = English)</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-language: en'</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// last modified (good for caching)</span>
<span style="color: #0000ff;">$time</span> = <a href="http://www.php.net/time"><span style="color: #000066;">time</span></a><span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span> - <span style="color: #cc66cc;">60</span>; <span style="color: #808080; font-style: italic;">// or filemtime($fn), etc</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Last-Modified: '</span>.<a href="http://www.php.net/gmdate"><span style="color: #000066;">gmdate</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'D, d M Y H:i:s'</span>, <span style="color: #0000ff;">$time</span><span style="color: #66cc66;">)</span>.<span style="color: #ff0000;">' GMT'</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// header for telling the browser that the content</span>
<span style="color: #808080; font-style: italic;">// did not get changed</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'HTTP/1.1 304 Not Modified'</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// set content length (good for caching):</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-Length: 1234'</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// Headers for an download:</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-Type: application/octet-stream'</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-Disposition: attachment; filename="example.zip"'</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-Transfer-Encoding: binary'</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// load the file to send:</span>
<a href="http://www.php.net/readfile"><span style="color: #000066;">readfile</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'example.zip'</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// Disable caching of the current document:</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Cache-Control: no-cache, no-store, max-age=0, must-revalidate'</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Expires: Mon, 26 Jul 1997 05:00:00 GMT'</span><span style="color: #66cc66;">)</span>; <span style="color: #808080; font-style: italic;">// Date in the past</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Pragma: no-cache'</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// set content type:</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-Type: text/html; charset=iso-8859-1'</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-Type: text/html; charset=utf-8'</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-Type: text/plain'</span><span style="color: #66cc66;">)</span>; <span style="color: #808080; font-style: italic;">// plain text file</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-Type: image/jpeg'</span><span style="color: #66cc66;">)</span>; <span style="color: #808080; font-style: italic;">// JPG picture</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-Type: application/zip'</span><span style="color: #66cc66;">)</span>; <span style="color: #808080; font-style: italic;">// ZIP file</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-Type: application/pdf'</span><span style="color: #66cc66;">)</span>; <span style="color: #808080; font-style: italic;">// PDF file</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-Type: audio/mpeg'</span><span style="color: #66cc66;">)</span>; <span style="color: #808080; font-style: italic;">// Audio MPEG (MP3,...) file</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-Type: application/x-shockwave-flash'</span><span style="color: #66cc66;">)</span>; <span style="color: #808080; font-style: italic;">// Flash animation</span>
<span style="color: #808080; font-style: italic;">// show sign in box</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'HTTP/1.1 401 Unauthorized'</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'WWW-Authenticate: Basic realm="Top Secret"'</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/print"><span style="color: #000066;">print</span></a> <span style="color: #ff0000;">'Text that will be displayed if the user hits cancel or '</span>;
<a href="http://www.php.net/print"><span style="color: #000066;">print</span></a> <span style="color: #ff0000;">'enters wrong login data'</span>;php Array2object和Object2array
将关联数组转换为匿名对象，反之亦然。
<span style="color: #000000; font-weight: bold;">function</span> array2object<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$array</span><span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span>
<span style="color: #b1b100;">if</span> <span style="color: #66cc66;">(</span><a href="http://www.php.net/is_array"><span style="color: #000066;">is_array</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$array</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$obj</span> = <span style="color: #000000; font-weight: bold;">new</span> StdClass<span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>;
<span style="color: #b1b100;">foreach</span> <span style="color: #66cc66;">(</span><span style="color: #0000ff;">$array</span> <span style="color: #b1b100;">as</span> <span style="color: #0000ff;">$key</span> => <span style="color: #0000ff;">$val</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$obj</span>-><span style="color: #0000ff;">$key</span> = <span style="color: #0000ff;">$val</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #66cc66;">}</span>
<span style="color: #b1b100;">else</span> <span style="color: #66cc66;">{</span> <span style="color: #0000ff;">$obj</span> = <span style="color: #0000ff;">$array</span>; <span style="color: #66cc66;">}</span>
<span style="color: #b1b100;">return</span> <span style="color: #0000ff;">$obj</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #000000; font-weight: bold;">function</span> object2array<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$object</span><span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span>
<span style="color: #b1b100;">if</span> <span style="color: #66cc66;">(</span><a href="http://www.php.net/is_object"><span style="color: #000066;">is_object</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$object</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span>
<span style="color: #b1b100;">foreach</span> <span style="color: #66cc66;">(</span><span style="color: #0000ff;">$object</span> <span style="color: #b1b100;">as</span> <span style="color: #0000ff;">$key</span> => <span style="color: #0000ff;">$value</span><span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$array</span><span style="color: #66cc66;">[</span><span style="color: #0000ff;">$key</span><span style="color: #66cc66;">]</span> = <span style="color: #0000ff;">$value</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #66cc66;">}</span>
<span style="color: #b1b100;">else</span> <span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$array</span> = <span style="color: #0000ff;">$object</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #b1b100;">return</span> <span style="color: #0000ff;">$array</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #808080; font-style: italic;">// example:</span>
<span style="color: #0000ff;">$array</span> = <a href="http://www.php.net/array"><span style="color: #000066;">array</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'foo'</span> => <span style="color: #ff0000;">'bar'</span>, <span style="color: #ff0000;">'one'</span> => <span style="color: #ff0000;">'two'</span>, <span style="color: #ff0000;">'three'</span> => <span style="color: #ff0000;">'four'</span><span style="color: #66cc66;">)</span>;
<span style="color: #0000ff;">$obj</span> = array2object<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$array</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/print"><span style="color: #000066;">print</span></a> <span style="color: #0000ff;">$obj</span>-><span style="color: #006600;">one</span>; <span style="color: #808080; font-style: italic;">// output's "two"</span>
<span style="color: #0000ff;">$arr</span> = object2array<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$obj</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/print"><span style="color: #000066;">print</span></a> <span style="color: #0000ff;">$arr</span><span style="color: #66cc66;">[</span><span style="color: #ff0000;">'foo'</span><span style="color: #66cc66;">]</span>; <span style="color: #808080; font-style: italic;">// output's bar</span>php String2Hex和Hex2String
将十六进制转换为字符串，反之亦然
<span style="color: #000000; font-weight: bold;">function</span> String2Hex<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$string</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$hex</span>=<span style="color: #ff0000;">''</span>;
<span style="color: #b1b100;">for</span> <span style="color: #66cc66;">(</span><span style="color: #0000ff;">$i</span>=<span style="color: #cc66cc;">0</span>; <span style="color: #0000ff;">$i</span> < <a href="http://www.php.net/strlen"><span style="color: #000066;">strlen</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$string</span><span style="color: #66cc66;">)</span>; <span style="color: #0000ff;">$i</span>++<span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$hex</span> .= <a href="http://www.php.net/dechex"><span style="color: #000066;">dechex</span></a><span style="color: #66cc66;">(</span><a href="http://www.php.net/ord"><span style="color: #000066;">ord</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$string</span><span style="color: #66cc66;">[</span><span style="color: #0000ff;">$i</span><span style="color: #66cc66;">]</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #b1b100;">return</span> <span style="color: #0000ff;">$hex</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #000000; font-weight: bold;">function</span> Hex2String<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$hex</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$string</span>=<span style="color: #ff0000;">''</span>;
<span style="color: #b1b100;">for</span> <span style="color: #66cc66;">(</span><span style="color: #0000ff;">$i</span>=<span style="color: #cc66cc;">0</span>; <span style="color: #0000ff;">$i</span> < <a href="http://www.php.net/strlen"><span style="color: #000066;">strlen</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$hex</span><span style="color: #66cc66;">)</span><span style="color: #cc66cc;">-1</span>; <span style="color: #0000ff;">$i</span>+=<span style="color: #cc66cc;">2</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #0000ff;">$string</span> .= <a href="http://www.php.net/chr"><span style="color: #000066;">chr</span></a><span style="color: #66cc66;">(</span><a href="http://www.php.net/hexdec"><span style="color: #000066;">hexdec</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$hex</span><span style="color: #66cc66;">[</span><span style="color: #0000ff;">$i</span><span style="color: #66cc66;">]</span>.<span style="color: #0000ff;">$hex</span><span style="color: #66cc66;">[</span><span style="color: #0000ff;">$i</span><span style="color: #cc66cc;">+1</span><span style="color: #66cc66;">]</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #b1b100;">return</span> <span style="color: #0000ff;">$string</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #808080; font-style: italic;">// example:</span>
<span style="color: #0000ff;">$hex</span> = String2Hex<span style="color: #66cc66;">(</span><span style="color: #ff0000;">"test sentence..."</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// $hex contains 746573742073656e74656e63652e2e2e</span>
<a href="http://www.php.net/print"><span style="color: #000066;">print</span></a> Hex2String<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$hex</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// outputs: test sentence...</span>php 前缀和后缀
前缀或后缀为n次char的字符串
<span style="color: #000000; font-weight: bold;">function</span> str_prefix<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$str</span>, <span style="color: #0000ff;">$n</span>=<span style="color: #cc66cc;">1</span>, <span style="color: #0000ff;">$char</span>=<span style="color: #ff0000;">" "</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #b1b100;">for</span> <span style="color: #66cc66;">(</span><span style="color: #0000ff;">$x</span>=<span style="color: #cc66cc;">0</span>;<span style="color: #0000ff;">$x</span><<span style="color: #0000ff;">$n</span>;<span style="color: #0000ff;">$x</span>++<span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span> <span style="color: #0000ff;">$str</span> = <span style="color: #0000ff;">$char</span> . <span style="color: #0000ff;">$str</span>; <span style="color: #66cc66;">}</span>
<span style="color: #b1b100;">return</span> <span style="color: #0000ff;">$str</span>;
<span style="color: #66cc66;">}</span>
<span style="color: #000000; font-weight: bold;">function</span> str_suffix<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$str</span>, <span style="color: #0000ff;">$n</span>=<span style="color: #cc66cc;">1</span>, <span style="color: #0000ff;">$char</span>=<span style="color: #ff0000;">" "</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span>
<span style="color: #b1b100;">for</span> <span style="color: #66cc66;">(</span><span style="color: #0000ff;">$x</span>=<span style="color: #cc66cc;">0</span>;<span style="color: #0000ff;">$x</span><<span style="color: #0000ff;">$n</span>;<span style="color: #0000ff;">$x</span>++<span style="color: #66cc66;">)</span><span style="color: #66cc66;">{</span> <span style="color: #0000ff;">$str</span> = <span style="color: #0000ff;">$str</span> . <span style="color: #0000ff;">$char</span>; <span style="color: #66cc66;">}</span>
<span style="color: #b1b100;">return</span> <span style="color: #0000ff;">$str</span>;
<span style="color: #66cc66;">}</span>php 文件下载
演示如何使用PHP创建简单的文件下载。<br/>内容也可以动态生成）
<span style="color: #808080; font-style: italic;">// local file that should be send to the client</span>
<span style="color: #0000ff;">$local_file</span> = <span style="color: #ff0000;">'test.zip'</span>;
<span style="color: #808080; font-style: italic;">// filename that the user gets as default</span>
<span style="color: #0000ff;">$download_file</span> = <span style="color: #ff0000;">'your-download-name.zip'</span>;
<span style="color: #b1b100;">if</span><span style="color: #66cc66;">(</span><a href="http://www.php.net/file_exists"><span style="color: #000066;">file_exists</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$local_file</span><span style="color: #66cc66;">)</span> && <a href="http://www.php.net/is_file"><span style="color: #000066;">is_file</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$local_file</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span>
<span style="color: #808080; font-style: italic;">// send headers</span>
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Cache-control: private'</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-Type: application/octet-stream'</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-Length: '</span>.<a href="http://www.php.net/filesize"><span style="color: #000066;">filesize</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$local_file</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span>;
<a href="http://www.php.net/header"><span style="color: #000066;">header</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Content-Disposition: filename='</span>.<span style="color: #0000ff;">$download_file</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// flush content</span>
<a href="http://www.php.net/flush"><span style="color: #000066;">flush</span></a><span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">/*
** You can also remove the following part and
** replace it trough a database command fetching
** the download data
*/</span>
<span style="color: #808080; font-style: italic;">// open file stream</span>
<span style="color: #0000ff;">$file</span> = <a href="http://www.php.net/fopen"><span style="color: #000066;">fopen</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$local_file</span>, <span style="color: #ff0000;">"rb"</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// send the file to the browser</span>
<a href="http://www.php.net/print"><span style="color: #000066;">print</span></a> <a href="http://www.php.net/fread"><span style="color: #000066;">fread</span></a> <span style="color: #66cc66;">(</span><span style="color: #0000ff;">$file</span>, <a href="http://www.php.net/filesize"><span style="color: #000066;">filesize</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$local_file</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span>;
<span style="color: #808080; font-style: italic;">// close file stream</span>
<a href="http://www.php.net/fclose"><span style="color: #000066;">fclose</span></a><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$file</span><span style="color: #66cc66;">)</span>;<span style="color: #66cc66;">}</span>
<span style="color: #b1b100;">else</span> <span style="color: #66cc66;">{</span>
<a href="http://www.php.net/die"><span style="color: #000066;">die</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Error: The file '</span>.<span style="color: #0000ff;">$local_file</span>.<span style="color: #ff0000;">' does not exist!'</span><span style="color: #66cc66;">)</span>;
<span style="color: #66cc66;">}</span>