3v4l.org

run code in 300+ PHP versions simultaneously
<?php $hello = 0; while($hello<5) { echo 'Hello World '+<br>; $hello+=1; } echo 'Goodbye World';?>
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.27
Parse error: syntax error, unexpected '<' in /in/PpqjN on line 4
Process exited with code 255.
preferences:
178.83 ms | 1395 KiB | 64 Q