php正则过滤html标签、空格、换行符的代码

安哥网络

1. $descclear = str_replace("\r","",$descclear);//过滤换行
   
2. $descclear = str_replace("\n","",$descclear);//过滤换行
   
3. $descclear = str_replace("\t","",$descclear);//过滤换行
   
4. $descclear = str_replace("\r\n","",$descclear);//过滤换行
   
5. $descclear=preg_replace("/\s+/", " ", $descclear);//过滤多余回车
   
6. $str=preg_replace("/<[ ]+/si","<",$str); //过滤<__("<"号后面带空格)
   
7. 
   
8. $str=preg_replace("/<\!--.*?-->/si","",$str); //注释
   
9. $str=preg_replace("/<(\!.*?)>/si","",$str); //过滤DOCTYPE
   
10. $str=preg_replace("/<(\/?html.*?)>/si","",$str); //过滤html标签
    
11. $str=preg_replace("/<(\/?head.*?)>/si","",$str); //过滤head标签
    
12. $str=preg_replace("/<(\/?meta.*?)>/si","",$str); //过滤meta标签
    
13. $str=preg_replace("/<(\/?body.*?)>/si","",$str); //过滤body标签
    
14. $str=preg_replace("/<(\/?link.*?)>/si","",$str); //过滤link标签
    
15. $str=preg_replace("/<(\/?form.*?)>/si","",$str); //过滤form标签
    
16. $str=preg_replace("/cookie/si","COOKIE",$str); //过滤COOKIE标签
    
17. 
    
18. $str=preg_replace("/<(applet.*?)>(.*?)<(\/applet.*?)>/si","",$str); //过滤applet标签
    
19. $str=preg_replace("/<(\/?applet.*?)>/si","",$str); //过滤applet标签
    
20. 
    
21. $str=preg_replace("/<(style.*?)>(.*?)<(\/style.*?)>/si","",$str); //过滤style标签
    
22. $str=preg_replace("/<(\/?style.*?)>/si","",$str); //过滤style标签
    
23. 
    
24. $str=preg_replace("/<(title.*?)>(.*?)<(\/title.*?)>/si","",$str); //过滤title标签
    
25. $str=preg_replace("/<(\/?title.*?)>/si","",$str); //过滤title标签
    
26. 
    
27. $str=preg_replace("/<(object.*?)>(.*?)<(\/object.*?)>/si","",$str); //过滤object标签
    
28. $str=preg_replace("/<(\/?objec.*?)>/si","",$str); //过滤object标签
    
29. 
    
30. $str=preg_replace("/<(noframes.*?)>(.*?)<(\/noframes.*?)>/si","",$str); //过滤noframes标签
    
31. $str=preg_replace("/<(\/?noframes.*?)>/si","",$str); //过滤noframes标签
    
32. 
    
33. $str=preg_replace("/<(i?frame.*?)>(.*?)<(\/i?frame.*?)>/si","",$str); //过滤frame标签
    
34. $str=preg_replace("/<(\/?i?frame.*?)>/si","",$str); //过滤frame标签
    
35. 
    
36. $str=preg_replace("/<(script.*?)>(.*?)<(\/script.*?)>/si","",$str); //过滤script标签
    
37. $str=preg_replace("/<(\/?script.*?)>/si","",$str); //过滤script标签
    
38. $str=preg_replace("/javascript/si","Javascript",$str); //过滤script标签
    
39. $str=preg_replace("/vbscript/si","Vbscript",$str); //过滤script标签
    
40. $str=preg_replace("/on([a-z]+)\s*=/si","On\\1=",$str); //过滤script标签
    
41. $str=preg_replace("/&#/si","&＃",$str); //过滤script标签，如javAsCript:alert(
    
42. 
    
43. --------------------------------------------------------------------
    
44. 
    
45. $pat = "/<(\/?)(script|i?frame|style|html|body|li|i|map|title|img|link|span|u|font|table|tr|b|marquee|td|strong|div|a|meta|\?|\%)([^>]*?)>/isU";
    
46. $descclear = preg_replace($pat,"",$desc);
    

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