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怎么在PHP中對HTML標簽進行過濾?相信很多沒有經驗的人對此束手無策,為此本文總結了問題出現的原因和解決方法,通過這篇文章希望你能解決這個問題。
首先分享一些比較常見的
$str=preg_replace("/<s*imgs+[^>]*?srcs*=s*('|")(.*?)\1[^>]*?/?s*>/i","", $str); //過濾img標簽 $str=preg_replace("/s+/","", $str); //過濾多余回車 $str=preg_replace("/<[ ]+/si","<",$str); //過濾<__("<"號后面帶空格) $str=preg_replace("/<!--.*?-->/si","",$str); //注釋 $str=preg_replace("/<(!.*?)>/si","",$str); //過濾DOCTYPE $str=preg_replace("/<(/?html.*?)>/si","",$str); //過濾html標簽 $str=preg_replace("/<(/?head.*?)>/si","",$str); //過濾head標簽 $str=preg_replace("/<(/?meta.*?)>/si","",$str); //過濾meta標簽 $str=preg_replace("/<(/?body.*?)>/si","",$str); //過濾body標簽 $str=preg_replace("/<(/?link.*?)>/si","",$str); //過濾link標簽 $str=preg_replace("/<(/?form.*?)>/si","",$str); //過濾form標簽 $str=preg_replace("/cookie/si","COOKIE",$str); //過濾COOKIE標簽 $str=preg_replace("/<(applet.*?)>(.*?)<(/applet.*?)>/si","",$str); //過濾applet標簽 $str=preg_replace("/<(/?applet.*?)>/si","",$str); //過濾applet標簽 $str=preg_replace("/<(style.*?)>(.*?)<(/style.*?)>/si","",$str); //過濾style標簽 $str=preg_replace("/<(/?style.*?)>/si","",$str); //過濾style標簽 $str=preg_replace("/<(title.*?)>(.*?)<(/title.*?)>/si","",$str); //過濾title標簽 $str=preg_replace("/<(/?title.*?)>/si","",$str); //過濾title標簽 $str=preg_replace("/<(object.*?)>(.*?)<(/object.*?)>/si","",$str); //過濾object標簽 $str=preg_replace("/<(/?objec.*?)>/si","",$str); //過濾object標簽 $str=preg_replace("/<(noframes.*?)>(.*?)<(/noframes.*?)>/si","",$str); //過濾noframes標簽 $str=preg_replace("/<(/?noframes.*?)>/si","",$str); //過濾noframes標簽 $str=preg_replace("/<(i?frame.*?)>(.*?)<(/i?frame.*?)>/si","",$str); //過濾frame標簽 $str=preg_replace("/<(/?i?frame.*?)>/si","",$str); //過濾frame標簽 $str=preg_replace("/<(script.*?)>(.*?)<(/script.*?)>/si","",$str); //過濾script標簽 $str=preg_replace("/<(/?script.*?)>/si","",$str); //過濾script標簽 $str=preg_replace("/javascript/si","Javascript",$str); //過濾script標簽 $str=preg_replace("/vbscript/si","Vbscript",$str); //過濾script標簽 $str=preg_replace("/on([a-z]+)s*=/si","On\1=",$str); //過濾script標簽 $str=preg_replace("/&#/si","&#",$str); //過濾script標簽
更簡單些的寫法:
function delhtml($str){ //清除html標簽 $st=-1; //開始 $et=-1; //結束 $stmp=array(); $stmp[]=" "; $len=strlen($str); for($i=0;$i<$len;$i++){ $ss=substr($str,$i,1); if(ord($ss)==60){ //ord("<")==60 $st=$i; } if(ord($ss)==62){ //ord(">")==62 $et=$i; if($st!=-1){ $stmp[]=substr($str,$st,$et-$st+1); } } } $str=str_replace($stmp,"",$str); return $str; }
再來一個:
function clear_html_label($html) { $search = array ("'<script[^>]*?>.*?</script>'si", "'<[/!]*?[^<>]*?>'si", "'([rn])[s]+'", "'&(quot|#34);'i", "'&(amp|#38);'i", "'&(lt|#60);'i", "'&(gt|#62);'i", "'&(nbsp|#160);'i", "'&(iexcl|#161);'i", "'&(cent|#162);'i", "'&(pound|#163);'i", "'&(copy|#169);'i", "'&#(d+);'e"); $replace = array ("", "", "1", """, "&", "<", ">", " ", chr(161), chr(162), chr(163), chr(169), "chr(1)"); return preg_replace($search, $replace, $html); }
看完上述內容,你們掌握怎么在PHP中對HTML標簽進行過濾的方法了嗎?如果還想學到更多技能或想了解更多相關內容,歡迎關注億速云行業資訊頻道,感謝各位的閱讀!
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