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用php过滤危险html代码的函数_php技巧

WBOY
WBOYOriginal
2016-05-17 09:36:13948browse

#用户发布的html,过滤危险代码 
function uh($str) 

$farr = array( 
"/\\s+/", //过滤多余的空白 
"/]*?)>/isU", //过滤 "/(]*)on[a-zA-Z]+\\s*=([^>]*>)/isU", //过滤javascrīpt的on事件 

); 
$tarr = array( 
" ", 
"<\\\1\\\\2\\\\3>", //如果要直接清除不安全的标签,这里可以留空 
"\\\\1\\\\2", 
); 

$str = preg_replace( $farr,$tarr,$str); 
return $str; 
}

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