非常全的PHP处理html标签的常用正则表达式

非常全的PHP处理html标签的常用正则表达式。正则表达式非常有用,但是总感觉精通的人不是很多,可能现在都是用集成函数处理的原因了吧。不精通行,但也得会用。整理下常用的PHP处理html标签的常用正则表达式,希望对大家有所帮助。

01 $str=preg_replace(“/\s+/”, ” “, $str); //过滤多余回车 

02 $str=preg_replace(“/<[ ]+/si”,”<“,$str); //过滤<__(“<“号后面带空格) 

04 $str=preg_replace(“/<\!–.*?–>/si”,””,$str); //注释 

05 $str=preg_replace(“/<(\!.*?)>/si”,””,$str); //过滤DOCTYPE 

06 $str=preg_replace(“/<(\/?html.*?)>/si”,””,$str); //过滤html标签 

07 $str=preg_replace(“/<(\/?head.*?)>/si”,””,$str); //过滤head标签 

08 $str=preg_replace(“/<(\/?meta.*?)>/si”,””,$str); //过滤meta标签 

09 $str=preg_replace(“/<(\/?body.*?)>/si”,””,$str); //过滤body标签 

10 $str=preg_replace(“/<(\/?link.*?)>/si”,””,$str); //过滤link标签 

11 $str=preg_replace(“/<(\/?form.*?)>/si”,””,$str); //过滤form标签 

12 $str=preg_replace(“/cookie/si”,”COOKIE”,$str); //过滤COOKIE标签 

13   

14 $str=preg_replace(“/<(applet.*?)>(.*?)<(\/applet.*?)>/si”,””,$str); //过滤applet标签 

15 $str=preg_replace(“/<(\/?applet.*?)>/si”,””,$str); //过滤applet标签 

16   

17 $str=preg_replace(“/<(style.*?)>(.*?)<(\/style.*?)>/si”,””,$str); //过滤style标签 

18 $str=preg_replace(“/<(\/?style.*?)>/si”,””,$str); //过滤style标签 

19   

20 $str=preg_replace(“/<(title.*?)>(.*?)<(\/title.*?)>/si”,””,$str); //过滤title标签 

21 $str=preg_replace(“/<(\/?title.*?)>/si”,””,$str); //过滤title标签 

22   

23 $str=preg_replace(“/<(object.*?)>(.*?)<(\/object.*?)>/si”,””,$str); //过滤object标签 

24 $str=preg_replace(“/<(\/?objec.*?)>/si”,””,$str); //过滤object标签 

25   

26 $str=preg_replace(“/<(noframes.*?)>(.*?)<(\/noframes.*?)>/si”,””,$str); //过滤noframes标签 

27 $str=preg_replace(“/<(\/?noframes.*?)>/si”,””,$str); //过滤noframes标签 

28   

29 $str=preg_replace(“/<(i?frame.*?)>(.*?)<(\/i?frame.*?)>/si”,””,$str); //过滤frame标签 

30 $str=preg_replace(“/<(\/?i?frame.*?)>/si”,””,$str); //过滤frame标签 

31   

32 $str=preg_replace(“/<(script.*?)>(.*?)<(\/script.*?)>/si”,””,$str); //过滤script标签 

33 $str=preg_replace(“/<(\/?script.*?)>/si”,””,$str); //过滤script标签 

34 $str=preg_replace(“/javascript/si”,”Javascript”,$str); //过滤script标签 

35 $str=preg_replace(“/vbscript/si”,”Vbscript”,$str); //过滤script标签 

36 $str=preg_replace(“/on([a-z]+)\s*=/si”,”On\\1=”,$str); //过滤script标签 

37 $str=preg_replace(“/&#/si”,”&#”,$str); //过滤script标签,如javAsCript:alert(‘aabb)

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