strip_tags函數(shù)
strip_tags --- 去除字串中的HTML和PHP標(biāo)簽
語法:string strip_tags (string str [, string allowable_tags])
例,代碼如下:
- <?php
- $text = '<p>Test paragraph.</p><!-- Comment --> <a href="#fragment">Other text</a>';
- echo strip_tags($text);
- echo "n";
- // Allow <p> and <a>
- echo strip_tags($text, '<p><a>');
- ?>
正則過濾各種標(biāo)簽,空格,換行符,代碼如下:
- $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(biāo)簽
- $str=preg_replace("/<(/?head.*?)>/si","",$str); //過濾head標(biāo)簽
- $str=preg_replace("/<(/?meta.*?)>/si","",$str); //過濾meta標(biāo)簽
- $str=preg_replace("/<(/?body.*?)>/si","",$str); //過濾body標(biāo)簽
- $str=preg_replace("/<(/?link.*?)>/si","",$str); //過濾link標(biāo)簽
- $str=preg_replace("/<(/?form.*?)>/si","",$str); //過濾form標(biāo)簽
- $str=preg_replace("/cookie/si","COOKIE",$str); //過濾COOKIE標(biāo)簽
- $str=preg_replace("/<(applet.*?)>(.*?)<(/applet.*?)>/si","",$str); //過濾applet標(biāo)簽
- $str=preg_replace("/<(/?applet.*?)>/si","",$str); //過濾applet標(biāo)簽
- $str=preg_replace("/<(style.*?)>(.*?)<(/style.*?)>/si","",$str); //過濾style標(biāo)簽
- $str=preg_replace("/<(/?style.*?)>/si","",$str); //過濾style標(biāo)簽
- $str=preg_replace("/<(title.*?)>(.*?)<(/title.*?)>/si","",$str); //過濾title標(biāo)簽
- $str=preg_replace("/<(/?title.*?)>/si","",$str); //過濾title標(biāo)簽
- $str=preg_replace("/<(object.*?)>(.*?)<(/object.*?)>/si","",$str); //過濾object標(biāo)簽
- $str=preg_replace("/<(/?objec.*?)>/si","",$str); //過濾object標(biāo)簽
- $str=preg_replace("/<(noframes.*?)>(.*?)<(/noframes.*?)>/si","",$str); //過濾noframes標(biāo)簽
- $str=preg_replace("/<(/?noframes.*?)>/si","",$str); //過濾noframes標(biāo)簽
- $str=preg_replace("/<(i?frame.*?)>(.*?)<(/i?frame.*?)>/si","",$str); //過濾frame標(biāo)簽
- $str=preg_replace("/<(/?i?frame.*?)>/si","",$str); //過濾frame標(biāo)簽
- $str=preg_replace("/<(script.*?)>(.*?)<(/script.*?)>/si","",$str); //過濾script標(biāo)簽
- $str=preg_replace("/<(/?script.*?)>/si","",$str); //過濾script標(biāo)簽
- $str=preg_replace("/javascript/si","Javascript",$str); //過濾script標(biāo)簽
- $str=preg_replace("/vbscript/si","Vbscript",$str); //過濾script標(biāo)簽
- $str=preg_replace("/on([a-z]+)s*=/si","On/1=",$str); //過濾script標(biāo)簽
- $str=preg_replace("/&#/si","&#",$str); //過濾script標(biāo)簽
php 正則過濾html 的超鏈接,代碼如下:
- <?php
- echo preg_replace("/(?<=href=)([^>]*)(?=>)/i","#", "<a href='www.companysz.com'>你好,點這里看看</a><a href='www.companysz.com'>你好,點這里看看</a>");
- ?>
正則:/(?<=href=)([^>]*)(?=>)/
(?<=exp) 匹配exp后面的位置
(?=exp) 匹配exp前面的位置
此正則 匹配 在 href= 之后 “>” 之前 的 非 “>” 的所有字符
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