3v4l.org

run code in 500+ PHP versions simultaneously
<?php # Null Coalescing Assignment Operator # OLD WAY (PHP < 7.4 ) $data['comments']['user_id'] = $data['comments']['user_id'] ?? 'PlaceHoldered value...'; var_dump($data['comments']['user_id']); $data = null; # PHP 7.4 + syntax to use new assigment operator without unecessary tests. $data['comments']['user_id'] ??= 'PlaceHoldered value...'; var_dump($data['comments']['user_id']);
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
string(22) "PlaceHoldered value..." string(22) "PlaceHoldered value..."
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Parse error: syntax error, unexpected '=' in /in/pV6PF on line 10
Process exited with code 255.
preferences:
166.46 ms | 1496 KiB | 4 Q