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Strip HTML Tags Function for PHP

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strip_tags is a default HTML Tag stripper in PHP. However, it can't strip some of the tags, so this enhanced version called strip_html_tags will remove more html elements.

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  1. function strip_html_tags( $text )
  2. {
  3.     $text = preg_replace(
  4.         array(
  5.           // Remove invisible content
  6.             '@<head[^>]*?>.*?</head>@siu',
  7.             '@<style[^>]*?>.*?</style>@siu',
  8.             '@<script[^>]*?.*?</script>@siu',
  9.             '@<object[^>]*?.*?</object>@siu',
  10.             '@<embed[^>]*?.*?</embed>@siu',
  11.             '@<applet[^>]*?.*?</applet>@siu',
  12.             '@<noframes[^>]*?.*?</noframes>@siu',
  13.             '@<noscript[^>]*?.*?</noscript>@siu',
  14.             '@<noembed[^>]*?.*?</noembed>@siu',
  15.           // Add line breaks before and after blocks
  16.             '@</?((address)|(blockquote)|(center)|(del))@iu',
  17.             '@</?((div)|(h[1-9])|(ins)|(isindex)|(p)|(pre))@iu',
  18.             '@</?((dir)|(dl)|(dt)|(dd)|(li)|(menu)|(ol)|(ul))@iu',
  19.             '@</?((table)|(th)|(td)|(caption))@iu',
  20.             '@</?((form)|(button)|(fieldset)|(legend)|(input))@iu',
  21.             '@</?((label)|(select)|(optgroup)|(option)|(textarea))@iu',
  22.             '@</?((frameset)|(frame)|(iframe))@iu',
  23.         ),
  24.         array(
  25.             ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
  26.             "
  27. $0", "
  28. $0", "
  29. $0", "
  30. $0", "
  31. $0", "
  32. $0",
  33.             "
  34. $0", "
  35. $0",
  36.         ),
  37.         $text );
  38.  
  39.     // you can exclude some html tags here, in this case B and A tags       
  40.     return strip_tags( $text , '<b><a>' );
  41. }

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