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<?php $arr = array('a', 'b', 'c', 'd', 'e'); $key = array_search('c', $arr); unset($arr[$key]); var_dump($arr);
Output for 4.3.0 - 7.2.0
array(4) { [0]=> string(1) "a" [1]=> string(1) "b" [3]=> string(1) "d" [4]=> string(1) "e" }