3v4l.org

run code in 300+ PHP versions simultaneously
<?php session_start(); $oldSession = array(); $_SESSION = $oldSession; session_decode('id|i:1;'); var_dump($_SESSION); var_dump($oldSession);
Output for 5.6.0 - 5.6.40, 7.0.13 - 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array(1) { ["id"]=> int(1) } array(0) { }
Output for 7.0.0 - 7.0.12
array(1) { ["id"]=> int(1) } array(1) { ["id"]=> int(1) }
preferences:
1233.3 ms | 407 KiB | 5 Q