Comparing a JSON file and a PHP file

First Post, any help is appreciated.

I have a PHP file (Array) with data from a database, which i need to compare to a JSON file (Object). By looking through forums i have seen stuff about jQuery and AJAX requests, so i was thinking maybe i need to use those for my solution.

The PHP Array

<?php 
$codes = [
[
    'code' => '1111',
    'name' => 'Management',
],
[
    'code' => '1305',
    'name' => 'Price',
],
[
    'code' => '1161',
    'name' => 'Service',
]

and the array goes on.

The JSON Object

[{"name":"Management","code":"1111","accountingArea":"3194","managerUsername":null},
{"name":"Storage","code":"9033","accountingArea":"3194","managerUsername":null}]

is the way the JSON Object is formatted. For some reason it has no name, which i don’t know if it’s a problem, when it comes to comparing two different files.

The product will need to be a PHP script that tells the user which entries are missing in the other file.

The only thing that needs to be compared are the codes.

I have not done anything with JSON files yet and am quite new to PHP too. So far i have only included both the files in my script file and don’t know where to start things off.

Answer

You can take JSON from file as string and use php json_decode() function that function will return a php array, then you can just make a foreach cicle and check the codes

Your code should be similar to this

<?php
    $codes = [
    [
        'code' => '1111',
        'name' => 'Management',
    ],
    [
        'code' => '1305',
        'name' => 'Price',
    ],
    [
        'code' => '1161',
        'name' => 'Service',
    ]];
    
    $json_str = '[{"name":"Management","code":"1111","accountingArea":"3194","managerUsername":null},
    {"name":"Management","code":"11141","accountingArea":"3194","managerUsername":null},
    {"name":"Management","code":"1305","accountingArea":"3194","managerUsername":null},
    {"name":"Management","code":"1161","accountingArea":"3194","managerUsername":null},
    {"name":"Storage","code":"9033","accountingArea":"3194","managerUsername":null}]';
    $json_array = json_decode($json_str, true);
    
    $result = array();
    $codesN = array_column($codes, 'code');
    
    $i = 0;
    for($i; $i < count($json_array); $i++) {
       if(in_array($json_array[$i]["code"], $codesN)) {
        $result[] = $json_array[$i]["code"];
       }
    }
    
    var_dump($result);

This will return:

array(3) {
  [0]=>
  string(4) "1111"
  [1]=>
  string(4) "1305"
  [2]=>
  string(4) "1161"
}