3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(0); var_dump(array_combine(['a'], ['1', '2']));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.15, 8.5.0 - 8.5.1

Process exited with code 255.
Output for 5.6.38, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
bool(false)
preferences:
213.67 ms | 407 KiB | 5 Q