[PHP知识库]php 递归汇总2个数组中的数据

将arr2的数据汇总至arr1中，必须key结构相等 如果key指向的是数组将数组里的元素进行合并

直接上代码

function mergeData(&$arr1,$arr2){
    foreach($arr1 as $kk=>$vv){
        process($arr1,$arr2,$kk);
    }
}

function process(&$arr1,$arr2,$key){
    if(is_array($arr1[$key])){
        foreach($arr1[$key] as $k=>$v){
            process($arr1[$key],$arr2[$key],$k);
        }
    }else{
        $arr1[$key] = $arr1[$key]+$arr2[$key];
    }
}
$arr1=[
    "a"=>1,
    "b"=>10,
    "c"=>[
        "c1"=>20,
        "c2"=>30,
        "c3"=>40,
    ],
    "d"=>[
        "d1"=>[
            "d11"=>100,
            "d12"=>200
        ],
        "d2"=>1000,
    ],
    "e"=>[
        "e1"=>[
            "e11"=>[
                "e111"=>123456
            ]
        ],
        "e2"=>11111
    ]
];

$arr2=[
    "a"=>1,
    "b"=>10,
    "c"=>[
        "c1"=>20,
        "c2"=>30,
        "c3"=>40,
    ],
    "d"=>[
        "d1"=>[
            "d11"=>100,
            "d12"=>200
        ],
        "d2"=>1000,
    ],
    "e"=>[
        "e1"=>[
            "e11"=>[
                "e111"=>123456
            ]
        ],
        "e2"=>11111
    ]
];

mergeData($arr1,$arr2);
var_dump($arr1);