3v4l.org

run code in 500+ PHP versions simultaneously
<?php session_start(); $oldSession = $_SESSION; session_decode('id|i:1;'); var_dump($_SESSION); var_dump($oldSession);
Output for 7.0.0 - 7.0.11
array(1) { ["id"]=> int(1) } array(1) { ["id"]=> int(1) }
Output for 5.6.0 - 5.6.26, 7.0.20 - 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 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
array(1) { ["id"]=> int(1) } array(0) { }
preferences:
30.01 ms | 1144 KiB | 11 Q