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<?php class C { public ?int $v = 123; } $x = new C; unset($x->v); $y = new C; $y->v = null; function propertyWasUnset($object, $propertyName) { try { $object->{$propertyName}; return true; } catch (\Error $e) { return false; } } var_dump(propertyWasUnset($x, 'v')); var_dump(propertyWasUnset($y, 'v'));
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.25, 8.4.1 - 8.4.12
bool(false) bool(true)
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 bool(false) bool(true)
Output for 7.3.0 - 7.3.33
Parse error: syntax error, unexpected '?', expecting function (T_FUNCTION) or const (T_CONST) in /in/7NL0Y on line 4
Process exited with code 255.
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