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PHP Search String in Array - Case Insensitive

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Use it similar to in_array function of PHP.

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  1. function in_array_str_i($key, $array){
  2.     foreach($array as $element){
  3.         if(strcasecmp($key, $element)==0){
  4.             return true;
  5.         }
  6.     }
  7.     return false;
  8. }
  9.  
  10. $array = array(
  11.     'string1',
  12.     'string2',
  13.     'StriNg3'
  14. );
  15.  
  16. var_dump(in_array_str_i('string3', $array)); //bool(true). returns true

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