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<?php $store = array(); $first = array('one' => 1, 'two' => 2); $store = $first; var_dump($store); $second = array('two' => 2, 'three' => 3); $store = array_diff_assoc(array_merge($store, $second), $store); var_dump($store);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { ["one"]=> int(1) ["two"]=> int(2) } array(1) { ["three"]=> int(3) }

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