3v4l.org

run code in 300+ PHP versions simultaneously
<?php $head=memory_get_usage(); $x=['key1'=>'bla','key2'=>'some']; echo (memory_get_usage()-$head);
Output for 7.1.0 - 7.1.7, 7.2.0
0
Output for 7.0.0 - 7.0.20
376
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
712
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/PJrjr on line 3
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/PJrjr on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/PJrjr on line 3
Process exited with code 255.
preferences:
41.46 ms | 1353 KiB | 4 Q