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<?php function foo($array) { $array['extra'] = 'extra'; return $array; } function bar(&$array) { $array['extra'] = 'extra'; } $foo = array('test_foo' => 'test_foo'); $bar = array('test_bar' => 'test_bar'); $orifoo = $foo; $foo = foo($foo); bar($bar); print_r($foo); print_r($orifoo); print_r($bar); ?>
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [test_foo] => test_foo [extra] => extra ) Array ( [test_foo] => test_foo ) Array ( [test_bar] => test_bar [extra] => extra )

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