3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'asdsafsadfbloсk'; if (strpos($a, 'block') !== false) { echo 'true'; } else { echo 'false'; }
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.13
false
preferences:
102.29 ms | 407 KiB | 5 Q