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<?php $array = ['a', 'a', 'a', 'b', 'c', 'd', 'e']; $del_var = 'a'; for ($i = 0; $i < count($array); $i++) { if ($array[$i] === $del_var) { unset($array[$i]); break; } } print_r($array);
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
Array ( [1] => a [2] => a [3] => b [4] => c [5] => d [6] => e )

preferences:
134.37 ms | 408 KiB | 5 Q