I found this solution to loop and print an unknown depth array:

    printAllValues($arr);

    function printAllValues($arr) {
        if(!is_array($arr)) {
            echo ($arr);
            return;
        }
        foreach($arr as $k => $v) {
            printAllValues($v);
        }
    }

But this solution prints each array value individually. I want to get (id, name, is_master) at once and save into db. Not each one individually. The array to loop looks like it:

Array
(
    [data] => Array
        (
            [0] => Array
                (
                    [id] => 0ea8a4ab99694ce7b74f08ed7fc4602e
                    [name] => xxxxxxx
                    [is_master] => 
                    [master_id] => ce93cab80820446290f7ea627578e6e9
                    [has_children] => 1
                    [nodes] => Array
                        (
                            [0] => Array
                                (
                                    [id] => 431169710c83410d841ab3cce079a0fd
                                    [name] => xxxxxxxxxxx
                                    [is_master] => 
                                    [master_id] => 0ea8a4ab99694ce7b74f08ed7fc4602e
                                    [has_children] => 
                                    [nodes] => 
                                )

                            [1] => Array
                                (
                                    [id] => 98e15adfd57c4285981781590e112d32
                                    [name] => xxxxxxxxx
                                    [is_master] => 
                                    [master_id] => 0ea8a4ab99694ce7b74f08ed7fc4602e
                                    [has_children] => 1
                                    [nodes] => Array
                                    ....

And I want to loop and save each block like this into db:

            [id] => 0ea8a4ab99694ce7b74f08ed7fc4602e
            [name] => xxxxxxx
            [is_master] => 
            [master_id] => 1234567

CodePudding user response：

If you just want to process when encountering these values then you can do this:

function printAllValues($arr) {
    if (!is_array($arr)) {
        // don't process this
        return;
    }

    if (
        isset($arr["id"]) &&
        isset($arr["name"]) &&
        isset($arr["is_master"]) &&
        isset($arr["master_id"])
    ) {
        // all array keys exist
        // process data
    }

    foreach ($arr as $k => $v) {
        printAllValues($v);
    }
}

If you want to retrieve all the values, we can adjust that further and return a "simplified" array of these values

function getAllValues($arr, $values = []) {
    if (!is_array($arr)) {
        // no modifications, return original array
        return $values;
    }

    if (
        isset($arr["id"]) &&
        isset($arr["name"]) &&
        isset($arr["is_master"]) &&
        isset($arr["master_id"])
    ) {
        // all array keys exist
        // store data
        $values[] = [
            "id" => $arr["id"],
            "name" => $arr["name"],
            "is_master" => $arr["is_master"],
            "master_id" => $arr["master_id"],
        ];
    }

    foreach ($arr as $k => $v) {
        $values = getAllValues($v, $values);
    }

    return $values;
}

$simplified = getAllValues($arr);

echo json_encode($simplified);
/* Example Output
[
    {
        "id": "1",
        "name": "1",
        "is_master": "1",
        "master_id": "1"
    },
    {
        "id": "2",
        "name": "2",
        "is_master": "1",
        "master_id": "2"
    }
]
*/

NOTE: these are simple examples trying to match your code structure, there are many different ways to do this

CodePudding user response：

Save the values of the current level to the database. Then if there are children, loop over the children and call the function recursively.

function saveAllValues($arr) {
    save_to_db($arr['id'], $arr['name'], $arr['is_master'], $arr['master_id']);
    if ($arr['has_children']) {
        array_map('saveAllValues, $arr['nodes']);
    }
}