3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = array('bar => null); if (isset($foo['bar'])) { echo 'hello world'; } else { echo 'hello alien'; }
Output for 5.4.0 - 5.4.25
Parse error: syntax error, unexpected 'bar' (T_STRING), expecting ')' in /in/o2XZZ on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/o2XZZ on line 5
Process exited with code 255.
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180.66 ms | 1395 KiB | 62 Q