用regex改进URL解释

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A source to help you interpreting URLs in plain text as a html link. It's an improvement of what was proposed here : http://snipplr.com/view/2371/regex-regular-expression-to-match-a-url/
  1. // Returns the text given as parameter, with contained URLs interpreted as HTML links
  2.  
  3. function link($text){
  4.   return preg_replace('@((https?://)?([-w]+.[-w.]+)+w(:d+)?(/([-w/_.]*(?S+)?)?)*)@', '<a href="$1">$1</a>', $text);
  5. }

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