Array Merge Logic for Doctorapp

array_merge_doctorapp.php

<?php

$total_services = [
    0 => [
        'id' => 1,
        'name' => 'a'
    ],
    1 => [
        'id' => 2,
        'name' => 'b'
    ],
    2 => [
        'id' => 3,
        'name' => 'c'
    ],
    3 => [
        'id' => 4,
        'name' => 'd'
    ]
];

$doctor_services = [
    0 => [
        'id' => 2,
        'name' => 'b',
        'charges' => 123
    ],
    1 => [
        'id' => 4,
        'name' => 'd',
        'charges' => 456
    ]
    ];

echo "before\n";
print_r($total_services);
print_r($doctor_services);

foreach( $total_services as $t_key => $service ) {
    foreach($doctor_services as $d_key => $d_service) {
        if($service['id'] == $d_service['id']) {
            $total_services[$t_key] = array_merge($service, $d_service);
        } else {
            if( !array_key_exists('charges', $total_services[$t_key]) ) {
                $total_services[$t_key]['charges'] = 0;
            }
        }
    }
}

echo "\nafter\n";
print_r($total_services);
print_r($doctor_services);