3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=[1,2]; $b=[2,...$a, 1=>3]; var_dump($b);
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.14, 8.4.1
array(3) { [0]=> int(2) [1]=> int(3) [2]=> int(2) }
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Parse error: syntax error, unexpected '...' (T_ELLIPSIS), expecting ']' in /in/RmJsd on line 3
Process exited with code 255.
preferences:
43.37 ms | 407 KiB | 5 Q