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Filter alphabetic characters only - PHP

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Replace non alpha-numeric characters with PHP

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  1. /**
  2.  * Used to give the full hyperlink for news/events items
  3.  *
  4.  * @param $type string - events/news
  5.  * @param $id int - ID of item for link 
  6.  * @param $title string - item title for link to strip bad chars
  7.  **/
  8. public function seo_slug ( $type, $id, $title ) 
  9. {
  10. 	// strip bad chars
  11. 	$slug = trim(strtolower(preg_replace("/[^a-zA-Z0-9\s]/", "", $title)));
  12. 	$slug = str_replace('  ','-', $slug);
  13. 	$slug = str_replace(' ','-', $slug);
  14.  
  15. 	$url = '/'.$type.'/d/'.$id.'/'.$slug.'/';
  16.  
  17. 	return $url;
  18. }

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