3v4l.org

run code in 300+ PHP versions simultaneously
<?php $i = 0; for (&$i = 1; &$i <= 10; &$i++) { print $i; } ?>
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.16, 7.0.0
Parse error: syntax error, unexpected '&', expecting ';' in /in/hRhBN on line 3
Process exited with code 255.
preferences:
171.73 ms | 1395 KiB | 24 Q