$str=preg_replace("/\s+/", " ", $str); //过滤多余回车$str=preg_replace("/<[ ]+/si","<",$str); //过滤<__("<"号后面带空格) $str=preg_replace("/<\!--.*?-->/si","",$str); //注释$str=preg_replace("/<(\!.*?)>/si","",$str); //过滤DOCTYPE$str=preg_replace("/<(\/?html.*?)>/si","",$str); //过滤html标签$str=preg_replace("/<(\/?head.*?)>/si","",$str); //过滤head标签$str=preg_replace("/<(\/?meta.*?)>/si","",$str); //过滤meta标签$str=preg_replace("/<(\/?body.*?)>/si","",$str); //过滤body标签$str=preg_replace("/<(\/?link.*?)>/si","",$str); //过滤link标签$str=preg_replace("/<(\/?
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