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run code in 300+ PHP versions simultaneously
<?php function isStringOrNumeric($in) { return basename($in); } class Test{} $a = array( 'index.php', '../../../index.php', 'valami.txt'); $b = array_filter($a, 'isStringOrNumeric'); var_dump($a); var_dump($b); if($b === $a) echo('Success!'); else echo('Fail!');
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
array(3) { [0]=> string(9) "index.php" [1]=> string(18) "../../../index.php" [2]=> string(10) "valami.txt" } array(3) { [0]=> string(9) "index.php" [1]=> string(18) "../../../index.php" [2]=> string(10) "valami.txt" } Success!

preferences:
277.84 ms | 406 KiB | 456 Q