<?php $o1 = array('foo' => '1', 'bar' => '2'); $o2 = array('foo' => '3', 'baz' => '4', 'qux' => 5); $o3 = array_intersect_key($o2, array_fill_keys(array('foo', 'qux'), null)); print_r($o1 + $o3); print_r(array_merge($o1, $o3));
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