3v4l.org

run code in 300+ PHP versions simultaneously
<?php $m = []; $m['port'] = ''; ! $m['port'] AND eval("unset($m['port']);"); var_dump($m);
Output for 5.4.0 - 5.4.27
Parse error: syntax error, unexpected '' (T_ENCAPSED_AND_WHITESPACE), expecting identifier (T_STRING) or variable (T_VARIABLE) or number (T_NUM_STRING) in /in/3vVPj on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.28
Parse error: syntax error, unexpected '[' in /in/3vVPj on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/3vVPj on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/3vVPj on line 2
Process exited with code 255.

preferences:
220.19 ms | 1395 KiB | 117 Q