3v4l.org

run code in 300+ PHP versions simultaneously
<?php array_keys("1"=>0,"2"=>1);
Output for 5.4.18 - 5.4.19
Parse error: syntax error, unexpected '=>' (T_DOUBLE_ARROW) in /in/FVdSo on line 3
Process exited with code 255.
Output for 5.4.0 - 5.4.17
Parse error: syntax error, unexpected '=>' (T_DOUBLE_ARROW) in /in/6IjXs on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_DOUBLE_ARROW in /in/6IjXs on line 3
Process exited with code 255.
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