3v4l.org

run code in 300+ PHP versions simultaneously
<?php $sentence = "This is a red apple"; $words = array('red','apple'); $ch = implode("|",$words); $pattern = "/($ch)/"; if(preg_match_all($pattern, $sentence,$m)) { echo "yes \n"; print_r($m); }
Output for 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 - 8.3.6
yes Array ( [0] => Array ( [0] => red [1] => apple ) [1] => Array ( [0] => red [1] => apple ) )
preferences:
268.07 ms | 404 KiB | 335 Q