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in_array_r($needle, $haystack, $strict = true);

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  1. // Recursive in_array functie
  2. function in_array_r($needle, $haystack, $strict = true) {
  3. 	foreach ($haystack as $item) {
  4. 		if (($strict ? $item === $needle : $item == $needle) || (is_array($item) && in_array_r($needle, $item, $strict))) {
  5. 			return true;
  6. 		}
  7. 	}
  8. 	return false;
  9. }

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