3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo array('source' => null) + array('source' => 'file');
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Array to string conversion in /in/PjVFA on line 2 Array
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Array to string conversion in /in/PjVFA on line 2 Array
Output for 5.3.0 - 5.3.29, 7.3.32 - 7.3.33, 7.4.26
Array
preferences:
178.08 ms | 401 KiB | 260 Q