Need help to debug json response

I am trying to sent response in that form

{"files":[{"webViewLink":""},{"webViewLink":""}]}

But I’m getting response like that

{"files":[{"webViewLink":"""}]}{"files":[{"webViewLink":"""}]}

Here is my PHP code:

<?php

    $idtemp = extractfiles($fol_id, $email);
    foreach ($idtemp['items'] as $val) {
        $id = $val['id'];
        $val = array(
            "webViewLink" =>  'https://drive.google.com/file/d/'.$val['id'].'/view?usp=drivesdk"'
            );
        $enc = json_encode($val);
        $val = '{"files":['.$enc.']}';
        echo($val);

Please help me to fix code i need response in that way

{"files":[{"webViewLink":""},{"webViewLink":""}]}

Answer

You should no do $val = '{"files":['.$enc.']}';

Use json_encode to make json, don’t do it manual

---

1. Create an object with desired keys outside the loop
2. Push anything to the desired array
3. Convert to json

<?php

    $idtemp = extractfiles($fol_id, $email);
    $json = (object) [
        "files" => []
    ];
    foreach ($idtemp['items'] as $val) {
        $json->files[] = (object) [
            "webViewLink" => 'https://drive.google.com/file/d/'.$val['id'].'/view?usp=drivesdk"'
        ];
    }
    $json = json_encode($json);
    echo($json);

---

If I use some dummy values to create an example, the output is:

{
    "files": [
        {
            "webViewLink": "https://drive.google.com/file/d/1/view?usp=drivesdk""
        },
        {
            "webViewLink": "https://drive.google.com/file/d/2/view?usp=drivesdk""
        },
        {
            "webViewLink": "https://drive.google.com/file/d/3/view?usp=drivesdk""
        }
    ]
}

As you can test in this online demo