，值的累加有关问题

<br /><br />$array = array(<br />	array(<br />		'1' => 1.2,<br />		'second' => 1.2,<br />	),<br />	array(<br />		'1' => 2.2,<br />		'second' => 4.2,<br />	),<br />);<br /><br /><br /><br />$totals = array();<br />foreach($array as $value) {<br />	foreach($value as $k => $v) {<br />		$totals[$k] += $v;<br />	}<br />}<br />