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<?php function NC($x){ $y = array(); $y['test'] = $x; $returnThis = $y['test'] ?? "Foo"; return $returnThis; } var_dump(NC(NULL)); // I know this will return "Foo". /* But I have no clue about what these will return. */ var_dump(NC(0)); var_dump(NC(-1)); var_dump(NC("")); var_dump(NC(array()));
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
string(3) "Foo" int(0) int(-1) string(0) "" array(0) { }
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/ZS3uB on line 6
Process exited with code 255.
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153.08 ms | 402 KiB | 231 Q