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<?php $x = NULL; $y = NULL; $z = 3; var_dump($x ?? $y ?? $z); // int(3) $a = false; $b = true; var_dump($a ?? $b); // bool(false) $d = 42; var_dump($c ?? $d); // int(42) $e = $c; var_dump($e);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
int(3) bool(false) int(42) Warning: Undefined variable $c in /in/gIrL4 on line 15 NULL
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 int(3) bool(false) int(42) Warning: Undefined variable $c in /in/gIrL4 on line 15 NULL
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
int(3) bool(false) int(42) Notice: Undefined variable: c in /in/gIrL4 on line 15 NULL
Output for 7.3.32 - 7.3.33
int(3) bool(false) int(42) NULL
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected '?' in /in/gIrL4 on line 6
Process exited with code 255.
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