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<?php $a = [1, 2, 3]; function foo(&$a) { $b = $a; $a[] = count($a) + 1; return $b; } var_dump( foo($a), // return value is *before* $a // after );
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) }

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