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validate non-english characters in a string

/ Published in: PHP
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  1. /**
  2.    * A function used to validate non-english characters in a string using regex
  3.    */
  4.   function validate_non_english_characters($string) {
  5.     $string = strtolower($string);
  6.  
  7.     if (!preg_match('/^[a-z0-9]{3,15}$/', $string)) {
  8.       // do something          
  9.     }
  10.   }

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