3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo reset(array()); echo reset(array(null))
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.32
Fatal error: Only variables can be passed by reference in /in/5CvD6 on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Only variables can be passed by reference in /in/5CvD6 on line 2
preferences:
208.93 ms | 1395 KiB | 123 Q