多维数组按某一列排序

public function multi_array_sort($multi_array,$sort_key,$sort=SORT_DESC) {
		if(is_array($multi_array)) { 
			foreach ($multi_array['list'] as $row_array) { 
				if(is_array($row_array)){ 
					$key_array[] = $row_array[$sort_key]; 
				}else{ 
					return false; 
				} 
			} 
		}else{ 
			return false; 
		} 
		array_multisort($key_array,$sort,$multi_array['list']); 
		return $multi_array; 
	}

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转载自jinnaxu-tju-edu-cn.iteye.com/blog/2245042