3v4l.org

run code in 300+ PHP versions simultaneously
<?php const CONFIG = [ 'pdo' => new PDO() ]; CONFIG['pdo'];
Output for 7.0.0
Fatal error: Constant expression contains invalid operations in /in/4lQBB on line 5
Process exited with code 255.
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.16
Parse error: syntax error, unexpected 'new' (T_NEW) in /in/4lQBB on line 4
Process exited with code 255.
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156.97 ms | 1399 KiB | 24 Q