3v4l.org

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<?php var_dump($b ?? 1 ?? 2); // 1 var_dump($b ?? (1 ?? 2)); // 1 var_dump(($b ?? 1) ?? 2); // 1
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(1) int(1) int(1)
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/K7VDm on line 3
Process exited with code 255.
preferences:
191.95 ms | 402 KiB | 226 Q