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php正则过滤html标签、空格、换行符等的代码示例

时间:2021-07-01 10:21:17 帮助过:22人阅读

  1. /**

  2. desc:正则过滤html标签、空格、换行符等
  3. link:bbs.it-home.org
  4. date:2013/2/23
  5. */
  6. $str=preg_replace("/\s+/", " ", $str); //过滤多余回车
  7. $str=preg_replace("/<[ ]+/si","<",$str); //过滤<__("<"号后面带空格)

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

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

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

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

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

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

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

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

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

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

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

  30. $str=preg_replace("/<(\/?script.*?)>/si","",$str); //过滤script标签
  31. $str=preg_replace("/javascript/si","Javascript",$str); //过滤script标签
  32. $str=preg_replace("/vbscript/si","Vbscript",$str); //过滤script标签
  33. $str=preg_replace("/on([a-z]+)\s*=/si","On\\1=",$str); //过滤script标签
  34. $str=preg_replace("/&#/si","&#",$str); //过滤script标签,如javAsCript:alert(
  35. ?>

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