3v4l.org

run code in 300+ PHP versions simultaneously
<?php $keywords = array ('Rock', 'Paper', 'sciSSors'); $strings = array ( "This town rocks!", "Hello, world!", "Paper is patient", ); $rc = preg_grep( sprintf('/%s/i', implode('|', array_map('preg_quote', $keywords))), $strings ); var_dump($rc);
Output for 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 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array(2) { [0]=> string(16) "This town rocks!" [2]=> string(16) "Paper is patient" }
preferences:
85.03 ms | 2344 KiB | 4 Q