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<?php class Foo { public $data = array('foo' => 'bar'); public function get($key) { return array_key_exists($key, $data) ? $data[$key] : NULL; } } $foo = new Foo(); $result = !empty($foo->get('foo')); var_export($result); $result = !empty($foo->get('bar')); var_export($result);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $data in /in/c8ggq on line 8 Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, null given in /in/c8ggq:8 Stack trace: #0 /in/c8ggq(14): Foo->get('foo') #1 {main} thrown in /in/c8ggq on line 8
Process exited with code 255.

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