PHP判断两个数组是否存在交集的方法

<p>/***************判断两个数组是否存在交集******************/</p>
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                function get_array_intersection($array_A,$array_B){<br />	if(!isset($array_A) || !isset($array_B) || !is_array($array_A) || !is_array($array_B) || empty($array_A) || empty($array_B)){<br />		return false;<br />	}<br />	foreach($array_A as $temp){<br />		if(in_array($temp,$array_B)){<br />			return true;<br />		}<br />	}<br />	unset($array_A,$array_B,$temp);<br />	return false;<br />}