3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=12; $b=24; echo $a."".+."".$b; ?>
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.29
Parse error: syntax error, unexpected '.' in /in/lS6DY on line 4
Process exited with code 255.
preferences:
167.21 ms | 1395 KiB | 66 Q