如何匹配两个数组的值？

Question

Using PHP, how can I match subscribers to users with these two arrays?

$subscribers

Array
(
    [0] => stdClass Object
        (
            [meta_id] => 1
            [email] => [e-mail]
        )

)

$users

Array
(
    [0] => stdClass Object
        (
            [ID] => 1
            [user_email] => [e-mail]
        )

    [1] => stdClass Object
        (
            [ID] => 2
            [user_email] => [e-mail]
        )

I thought this would do it...

<?php
foreach ( $users as $user ) {
    if ( in_array( '[e-mail]', $subscribers ) ) {
        echo 'Matched user';
    }
}

Answer 1

foreach ($users as $user) {
    foreach ($subscribers as $subscriber) {
        if ($user->user_email === $subscriber->email) {
            echo 'Matched user';
            break;
        }
    }
}