3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = (1,2,3,4); json_encode($arr);
Output for 5.3.0 - 5.3.21, 5.4.0 - 5.4.11
Parse error: syntax error, unexpected ',' in /in/bfpAM on line 3
Process exited with code 255.
preferences:
181.52 ms | 1395 KiB | 41 Q