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php正则过滤html标签、空格、换行符的代码

 

  • php正则过滤HTML的代码,可以用来过滤空格、换行符等html代码,可以根据自己的需求继续扩展。

    $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
    $str=preg_replace("/<(\/?form.*?)>/si","",$str); //过滤form标签
    $str=preg_replace("/cookie/si","COOKIE",$str); //过滤COOKIE标签

    $str=preg_replace("/<(applet.*?)>(.*?)<(\/applet.*?)>/si","",$str); //过滤applet标签
    $str=preg_replace("/<(\/?applet.*?)>/si","",$str); //过滤applet标签

    $str=preg_replace("/<(style.*?)>(.*?)<(\/style.*?)>/si","",$str); //过滤style标签
    $str=preg_replace("/<(\/?style.*?)>/si","",$str); //过滤style标签

    $str=preg_replace("/<(title.*?)>(.*?)<(\/title.*?)>/si","",$str); //过滤title标签
    $str=preg_replace("/<(\/?title.*?)>/si","",$str); //过滤title标签

    $str=preg_replace("/<(object.*?)>(.*?)<(\/object.*?)>/si","",$str); //过滤object标签
    $str=preg_replace("/<(\/?objec.*?)>/si","",$str); //过滤object标签

    $str=preg_replace("/<(noframes.*?)>(.*?)<(\/noframes.*?)>/si","",$str); //过滤noframes标签
    $str=preg_replace("/<(\/?noframes.*?)>/si","",$str); //过滤noframes标签

    $str=preg_replace("/<(i?frame.*?)>(.*?)<(\/i?frame.*?)>/si","",$str); //过滤frame标签
    $str=preg_replace("/<(\/?i?frame.*?)>/si","",$str); //过滤frame标签

    $str=preg_replace("/<(script.*?)>(.*?)<(\/script.*?)>/si","",$str); //过滤script标签
    $str=preg_replace("/<(\/?script.*?)>/si","",$str); //过滤script标签
    $str=preg_replace("/javascript/si","Javascript",$str); //过滤script标签
    $str=preg_replace("/vbscript/si","Vbscript",$str); //过滤script标签
    $str=preg_replace("/on([a-z]+)\s*=/si","On\\1=",$str); //过滤script标签
    $str=preg_replace("/&#/si","&#",$str); //过滤script标签,如javAsCript:alert(

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