PHP中三维数组转二位数组，并且根据某个字段去重

　　这是一个测试的三维数组：

	$arr = [
		[
			[
				'name' => 'zhangsan',
				'age' => 16
			],
			[
				'name' => 'lisi',
				'age' => 17
			],
			[
				'name' => 'wangwu',
				'age' => 15
			],
		],[
			[
				'name' => 'zhangsan',
				'age' => 16
			],
			[
				'name' => 'lisi',
				'age' => 13
			],
			[
				'name' => 'wangwu',
				'age' => 15
			],
		]
	];

　　循环获取值：

　　

	$age = [];
	foreach($arr as $value){  
        foreach($value as $v){  
        	if (in_array($v['age'], $age)) {
        		continue;
        	}
        	 $age[] = $v['age'];

             $arr2[]=$v;  
        }  
    }


	var_dump($arr2);exit;

　　打印的结果：