3v4l.org

run code in 300+ PHP versions simultaneously
<?php $_SESSION_start(); $_SESSION['error']="666"; echo '$_SESSION['error']'; ?>
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.16, 7.0.0 - 7.0.1
Parse error: syntax error, unexpected 'error' (T_STRING), expecting ',' or ';' in /in/B9q3O on line 5
Process exited with code 255.
preferences:
168.89 ms | 1395 KiB | 25 Q