php合并两个二维数组，二维数组按键名排序，删除二维数组元素，二维数组按相同字段合并）

一、两个二维数组的合并

$a=Array(0 => Array("id" => 66,"class_name" => "www.iiwnet.com"),1 => Array("id" => 67,"class_name" => "linux" ));
$b=Array(0 => Array("class_count"=> 8),1 => Array("class_count" => 2));

方法一：

php提供了一个方便的函数：

array_merge_recursive($as_activity,$array["data"]["as_activity"]);//合并两个数组

自己手动实现

$arr2 = array();
	     
	        $n = 0;
        	foreach($a as $k => $v){
        		foreach($v as $k1 => $v1){
                	$arr2[$n][$k1] = $v1;
        		}
            	$n++;
            }
        	foreach($b as $k => $v){
        		foreach($v as $k1 => $v1){
                	$arr2[$n][$k1] = $v1;
            	}
            	$n++;
            }