3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = [-5 => -5]; var_dump($arr);
Output for 5.4.0 - 7.1.0
array(1) { [-5]=> int(-5) }
Output for 5.2.3 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/6hO9F on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.2
<br /> <b>Parse error</b>: syntax error, unexpected '[' in <b>/in/6hO9F</b> on line <b>2</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
<br /> <b>Parse error</b>: parse error, unexpected '[' in <b>/in/6hO9F</b> on line <b>2</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br /> <b>Parse error</b>: parse error in <b>/in/6hO9F</b> on line <b>2</b><br />
Process exited with code 255.