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Activate Links in String PHP

/ Published in: PHP
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Returns the same string, except with links wrapped in <a href=""> tags. Works on www.snipplr.com and on http://snipplr.com

A variation of the script on the attached URL.

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  1. function activateLinks($string)
  2. {  
  3.  /*
  4. 	// This regular expression looks for <strong>http:// </strong>type url
  5. 	$string = preg_replace('(((f|ht){1}tp://)[-a-zA-Z0-9@:%_+.~#?&//=]+)',
  6. 	'<a href="1" target=_blank>$0$1$2$3</a>', $string);
  7.  
  8. 	// This regular expression looks for <strong>www. </strong>type url
  9. 	$string = preg_replace('([[:space:]()[{}])(www.[-a-zA-Z0-9@:%_+.~#?&//=]+)',
  10. 	'1<a href="http://2" target=_blank>$0$1$2$3</a>', $string);
  11.  
  12. 	// This regular expression looks for <strong>[email protected]</strong>
  13. 	$string = preg_replace('([_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3})',
  14. 	'<a href="mailto:1" target=_blank>$0$1$2$3</a>', $string);
  15. 	 */
  16.  
  17. 	 $m = preg_match_all('/http:\/\/[a-z0-9A-Z.]+(?(?=[\/])(.*))/', $string, $match); 
  18.  
  19. 	 if ($m) { 
  20. 		 $links=$match[0]; 
  21. 		 for ($j=0;$j<$m;$j++) { 
  22. 			 $string=str_replace($links[$j],'<a href="'.$links[$j].'">'.$links[$j].'</a>',$string); 
  23. 		 } 
  24. 	 }
  25.  
  26. 	 $m = preg_match_all('(www.[-a-zA-Z0-9@:%_+.~#?&//=]+)', $string, $match); 
  27.  
  28. 	 if ($m) { 
  29. 		 $links=$match[0]; 
  30. 		 for ($j=0;$j<$m;$j++) { 
  31. 			 $string=str_replace($links[$j],'<a href="'.$links[$j].'">'.$links[$j].'</a>',$string); 
  32. 		 } 
  33. 	 }
  34.  
  35. 	return $string;
  36.  
  37. }

URL: http://www.php.net/manual/en/function.preg-match-all.php#103552

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