3v4l.org

run code in 500+ PHP versions simultaneously
<?php $array = array(); for ($i = 0; $i < 50000; $i++) $array = array($array); json_encode($array);
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 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 - 7.2.34, 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 - 8.3.12, 8.3.13 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/NfMgi on line 8
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_encode() in /in/NfMgi on line 8
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: json_encode() in /in/NfMgi on line 8
preferences:
31.57 ms | 1153 KiB | 17 Q