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Clean User Submitted URL's

/ Published in: PHP
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Useful when using user-submitted URLs

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Copy this code and paste it in your HTML 
  1. # Fix the URL:
  2. $url = preg_replace('/((http:\/\/)?(www\.)?([\w\d-]*?\.)(\w{2,4})/?)/i', 'http://www.$4$5', $d[0]);
  3.  
  4. From: 
  5.  google.com 
  6.  www.google.com 
  7.  google.com/ 
  8.  http://google.com 
  9.  http://www.google.com 
  10.  http://www.google.com/ 
  11.  
  12. To:
  13.  http://www.google.com 
  14.  http://www.google.com 
  15.  http://www.google.com 
  16.  http://www.google.com 
  17.  http://www.google.com 
  18.  http://www.google.com

URL: http://www.themer.me/blog/scripting/460/clean-url-with-regex

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