在PHP中搜索json文件的文件内容并返回结果

Question

I am trying to create a search a function in php which searches for the data contained inside a Json file. I am able to do this for a normal text file which returns a list of results based on what has been entered in the search field which returns closet match. However does not work when doing this same for a json file and does not return anything.

search.php

if (isset($_POST) && isset($_POST['txt'])) {

    $search = $_POST['txt'];
    $file = file('data/contacts.json');
    $found = false;

    $jsonData = json_decode($file, true);

    foreach ($jsonData as $line) {
        if (strpos($line, $search) !== false) {
            $found = true;
            echo $line;
        }
    }
    if (!$found) {
        echo 'No match found';
    }
}

contacts.json

[
    {
    "id": 3,
    "forename": "John",
    "surname": "Smith",
    "email": "[e-mail]",
    "address": "addresss",
    "telephone": "01232302323"
},
{
    "id": 4,
    "forename": "Keith",
    "surname": "Miller",
    "email": "[e-mail]",
    "address": "ssdsds",
    "telephone": "01232302323"
},
{
    "id": 5,
    "forename": "Doug",
    "surname": "Howard",
    "email": "[e-mail]",
    "address": "test",
    "telephone": "01232302323"
},
{
    "id": 2,
    "forename": "r",
    "surname": "r",
    "email": "[e-mail]",
    "address": "test",
    "telephone": "01232302323"
}

 ]

Answer 1

Change this line $jsonData = json_decode($file, true); to

$jsonData = json_decode(json_encode($file),true);