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<?php $operators = [">0", ">=1", "==12", "<9", "<=1", "!=4"]; print_r(array_map(function($v) { return preg_replace('/[^\D]/', '', $v); }, $operators));
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 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 - 8.3.25, 8.4.1 - 8.4.12
Array ( [0] => > [1] => >= [2] => == [3] => < [4] => <= [5] => != )
preferences:
126.41 ms | 408 KiB | 5 Q