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run code in 300+ PHP versions simultaneously
<?php $arr = ["!qwerty","sapien", "!Bart", "!qwerty", "aa!bb"]; $filtered = preg_grep("/^\!.*$/", $arr); Var_dump($filtered); var_dump(array_diff($arr, $filtered));
Output for 5.6.38, 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(3) { [0]=> string(7) "!qwerty" [2]=> string(5) "!Bart" [3]=> string(7) "!qwerty" } array(2) { [1]=> string(6) "sapien" [4]=> string(5) "aa!bb" }
preferences:
154.04 ms | 408 KiB | 5 Q