3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(['foo' => 1] + ['foo' => 2]) => ['foo' => 1]);
Output for 5.4.0 - 5.4.17
Parse error: syntax error, unexpected '=>' (T_DOUBLE_ARROW) in /in/hURLt on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected '[', expecting ')' in /in/hURLt on line 3
Process exited with code 255.
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182.75 ms | 1399 KiB | 53 Q