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<?php class X { public $foo = 'x'; } class A { public function convertToDatabaseValue($value) { return $value; } } class B { public function convertToDatabaseValue(X $value) { // if (!($value instanceof X)) { // throw new \InvalidArgumentException(); // } return $value->foo; } } $foo = new X(); $bar = new B(); echo $bar->convertToDatabaseValue($foo);
Output for git.master, git.master_jit, rfc.property-hooks
x

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