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<?php var_dump($b ?? $c ?? 1); // 1 var_dump($b ?? ($c ?? 1)); // 1 var_dump(($b ?? $c) ?? 1); // 1
Output for 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) Warning: Undefined variable $c in /in/oKaFh on line 5 int(1)
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
int(1) int(1) Notice: Undefined variable: c in /in/oKaFh on line 5 int(1)
Output for 7.3.32 - 7.3.33
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/oKaFh on line 3
Process exited with code 255.
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142.4 ms | 402 KiB | 183 Q