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<?php function & do_something(& $arg) { $arg = 'func value'; return $arg; } $a = 'initial value'; $b = do_something($a); $b = 'new value'; var_dump($a, $b); $x = 'initial value'; $y = & do_something($x); $y = 'new value'; var_dump($x, $y);
Output for git.master, git.master_jit, rfc.property-hooks
string(10) "func value" string(9) "new value" string(9) "new value" string(9) "new value"

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