关于数组合并的有关问题

关于数组合并的问题
原数组:

<br />
$args1 = Array(<br />
		'0' => array(<br />
				'0' => 'a',<br />
				'1' => array(<br />
					'0' => array ( 'col1' => 'A1', 'col2' => 0 )<br />
				)<br />
		),<br />
		'1' => array(<br />
				'0' => 'b',<br />
				'1' => array(<br />
					'0' => array ( 'col1' => 'B1', 'col2' => 1 )<br />
				)<br />
		)<br />
);<br />
$args2 = Array(<br />
		'0' => array(<br />
				'0' => 'a',<br />
				'1' => array(<br />
					'0' => Array ( 'col1' => 'A2', 'col2' => 0 ), <br />
					'1' => Array ( 'col1' => 'A3', 'col2' => 0 ) <br />
				)<br />
		)<br />
);<br />

目标数组：

<br />
Array(<br />
		'0' => array(<br />
				'0' => 'a',<br />
				'1' => array(<br />
					'0' => array ( 'col1' => 'A1', 'col2' => 0 ),<br />
                                        '1' => Array ( 'col1' => 'A2', 'col2' => 0 ), <br />
					'2' => Array ( 'col1' => 'A3', 'col2' => 0 ) <br />
				)<br />
		),<br />
		'1' => array(<br />
				'0' => 'b',<br />
				'1' => array(<br />
					'0' => array ( 'col1' => 'B1', 'col2' => 1 )<br />
				)<br />
		)<br />
);<br />

------解决方案--------------------

$res = array();<br />
foreach($args1 as $item) $res[$item[0]] = $item;<br />
foreach($args2 as $item) $res[$item[0]][1] = array_merge($res[$item[0]][1], $item[1]);<br />
<br />
print_r(array_values($res));

Array
(
    [0] => Array
        (
            [0] => a
            [1] => Array
                (
                    [0] => Array
                        (
                            [col1] => A1
                            [col2] => 0
                        )

                    [1] => Array
                        (

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