php敏感词处理

<span style="white-space:pre">	</span>//敏感词处理
public function badwords($content,$flag = 0){
$badwords_dir = array(
'badword.php',
'adverlow.php'
);
$info = '';
require('Conf/'.$badwords_dir[$flag]);
for ($i=0;$i<count($badword);$i++){
$time = substr_count($content, $badword[$i]);
if($time>0){
$info = $badword[$i];
break;
}
}
return $info;
}
public function replaceBD($trans_str = ''){
require('Conf/badword.php');
$badwordarr = array_combine($badword,array_fill(0,count($badword),'***'));
return strtr($trans_str, $badwordarr);
}