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run code in 300+ PHP versions simultaneously
<?php class Foo { public $bar; public $baz; public $taz; } // please note that this API has a signature of `object $object` - any object allowed. function unsetProperties($object) { // we ignore inheritance and private properties for simplicity return array_diff( array_map( function (\ReflectionProperty $p) : string { return $p->getName(); }, (new ReflectionClass($object))->getProperties() ), array_keys((array) $object) ); } var_dump(unsetProperties(new Foo)); $foo = new Foo; unset($foo->baz); var_dump(unsetProperties($foo));
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.24, 7.4.0 - 7.4.13, 8.0.0
array(0) { } array(1) { [1]=> string(3) "baz" }