3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (isset(!$i1{)) print "\$i1 is assigned a value"; } else { print "\$i1 does not exist or has no value assigned to"; }
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.29
Parse error: syntax error, unexpected '!' in /in/QBdR5 on line 2
Process exited with code 255.
preferences:
177.63 ms | 1395 KiB | 66 Q