在PHP中,如何从html标签中删除特定的类? [英] in PHP, how to remove specific class from html tag?
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问题描述
$ html =< div>
< p> < span class ='test1 test2 test3'> text 1< / span>< / p>
< p>< span class ='test1 test2'> text 2< / span>< / p>
< p>< span class ='test1'> text 3< / span>< / p>
< p>< span class ='test1 test3 test2' > text 4< / span>< / p>
< / div>;
我只想将任何具有test2的类清空或删除,结果将是这样的:
< div>
< p>< span class =''> text 1< / span>< / p>
< p>< span class =''> text 2< / span>< / p>
< p>< span class ='test1'> text 3< / span>< / p>
< p>< span class =''> text 4< / span>< / p>
< / div>
如果您删除元素:
< DIV>
< p>文字1< / p>
< p> text 2< / p>
< p>< span class ='test1'> text 3< / span>< / p>
< p>文本4< / p>
< / div>
我很乐意使用正则表达式或类似PHP Simple HTML DOM Parser的内容,但我有没有线索如何使用它。并且使用正则表达式,我知道如何找到元素,而不是与它相关联的特定属性,特别是如果有多个属性,像我上面的例子。任何想法?
解决方案
$ notest2 = preg_replace(
/ class \\ s * = \s *'[^ \'] * test2 [^ \'] *'/,
class ='',
$ src)
C。
given the following string in PHP:
$html = "<div>
<p><span class='test1 test2 test3'>text 1</span></p>
<p><span class='test1 test2'>text 2</span></p>
<p><span class='test1'>text 3</span></p>
<p><span class='test1 test3 test2'>text 4</span></p>
</div>";
I just want to either empty or remove any class that has "test2" in it, so the result would be this:
<div>
<p><span class=''>text 1</span></p>
<p><span class=''>text 2</span></p>
<p><span class='test1'>text 3</span></p>
<p><span class=''>text 4</span></p>
</div>
of if you're removing the element:
<div>
<p>text 1</p>
<p>text 2</p>
<p><span class='test1'>text 3</span></p>
<p>text 4</p>
</div>
I'm happy to use a regex expression or something like PHP Simple HTML DOM Parser, but I have no clue how to use it. And with regex, I know how to find the element, but not the specific attribute associated w/ it, especially if there are multiple attributes like my example above. Any ideas?
解决方案
$notest2 = preg_replace(
"/class\s*=\s*'[^\']*test2[^\']*'/",
"class=''",
$src);
C.
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