3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=[1,2]; $b=[2,...$a]; var_dump($b);
Output for 7.4.4 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(3) { [0]=> int(2) [1]=> int(1) [2]=> int(2) }
Output for 7.1.25 - 7.1.30, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Parse error: syntax error, unexpected '...' (T_ELLIPSIS), expecting ']' in /in/k9n7G on line 3
Process exited with code 255.
preferences:
164.68 ms | 402 KiB | 166 Q