3v4l.org

run code in 300+ PHP versions simultaneously
<?php $i = 1; $test$$i = 2; echo $test1;
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.30
Parse error: syntax error, unexpected '$' in /in/aUvTu on line 5
Process exited with code 255.
preferences:
187.57 ms | 1395 KiB | 67 Q