3v4l.org

run code in 300+ PHP versions simultaneously
<?php $people = array("Tom"=> "address1","Dick"=> "address2","Harry"=> "address3"); $result = serialize($people); echo $result; echo"<br>"; echo $people["Dick"]; ?>
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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
a:3:{s:3:"Tom";s:8:"address1";s:4:"Dick";s:8:"address2";s:5:"Harry";s:8:"address3";}<br>address2
preferences:
185.01 ms | 404 KiB | 198 Q