Online PHP editor | output for vHUWR

@ 2017-08-01T03:21:58Z

<?php

$data = [
    ['DEPARTMENT_ID_FK' => '001', 'EMAIL_ADDRESS' => 'a@example.com'],
    ['DEPARTMENT_ID_FK' => '002', 'EMAIL_ADDRESS' => 'a@example.com'],
    ['DEPARTMENT_ID_FK' => '001', 'EMAIL_ADDRESS' => 'c@example.com'],
];

$agg = [];

foreach ($data as $dData) {
    $dep = $dData['DEPARTMENT_ID_FK'];
    $email = $dData['EMAIL_ADDRESS'];

    if (isset($agg[$dep])) {
        $agg[$dep][] = $email;
        continue;
    }

    $agg[$dep] = [$email];
}

$result = [];

foreach ($agg as $dep => $emails) {
    $result[] = [
        'DEPARTMENT_ID_FK' => $dep,
        'EMAIL_ADDRESS' => implode(',', $emails),
    ];
}

print_r($result);

Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.6 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1: Array ( [0] => Array ( [DEPARTMENT_ID_FK] => 001 [EMAIL_ADDRESS] => a@example.com,c@example.com ) [1] => Array ( [DEPARTMENT_ID_FK] => 002 [EMAIL_ADDRESS] => a@example.com ) )
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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