麻烦简单的PHP亵渎过滤器 [英] Trouble with simple PHP profanity filter
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问题描述
$函数clean($ str){
$ handle = fopen(badwords.txt,r); b $ b pre $
if($ handle){
while(!feof($ handle)){
$ array [] = fgets($ handle,4096);
}
fclose($ handle);
$ vowels = array(a,e,i,o,u,A,E,I, O,U);
$ filter =[explicit];
$ clean = str_replace($ array,$ filter,$ str);
返回$ clean;
当使用$元音代替$ array时,除了小写元音返回:
pre $ $ $ $ $ $ $ $ $ $ $ $ $ $
而不是
[显式]
不确定为什么这样做了。要么
任何想法?
谢谢!
解决方案
我修改了Davethegr8的解决方案,以获得以下工作示例:
函数clean($ str){
global $ clean_words;
$ replacement ='[explicit]';
$ b $ if(empty($ clean_words)){
$ badwords = explode(\\\
,file_get_contents('badwords.txt'));
$ clean_words = array();
$ b foreach($ badwords as $ word){
$ clean_words [] ='/(\ b'。trim($ word)。'\b)/ si';
$ b $ out = preg_replace($ clean_words,$ replacement,$ str);
返回$ out;
}
I am writing a simple profanity filter in PHP. Can anyone tell my why, in the following code, the filter works (it will print [explicit]) for the $vowels array and not the $lines array which I constructing from a text file?
function clean($str){
$handle = fopen("badwords.txt", "r");
if ($handle) {
while (!feof($handle)) {
$array[] = fgets($handle, 4096);
}
fclose($handle);
}
$vowels = array("a", "e", "i", "o", "u", "A", "E", "I", "O", "U");
$filter = "[explicit]";
$clean = str_replace($array, $filter, $str);
return $clean;
}
When using $vowels in replace of $array, it works except for lowercase vowels which return:
[[expl[explicit]c[explicit]t]xpl[explicit]c[explicit]t]
instead of
[explicit]
Not sure why that is going on, either.
Any ideas?
Thanks!
解决方案
I modified Davethegr8's solution to get the following working example:
function clean($str){
global $clean_words;
$replacement = '[explicit]';
if(empty($clean_words)){
$badwords = explode("\n", file_get_contents('badwords.txt'));
$clean_words = array();
foreach($badwords as $word) {
$clean_words[]= '/(\b' . trim($word) . '\b)/si';
}
}
$out = preg_replace($clean_words, $replacement, $str);
return $out;
}
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