php implode array multidimensional code example

Example: php implode multidimensional array

$users = [
	'users' => ['user1@example.com','user2@example.com'],
	'admins' => ['admin1@example.com', 'admin2@example.com']
];

// function to convert array of arrays to string
function implodeArrayofArrays($array, $glue  = ', ') {
        $output = '';
        foreach ($array as $subarray) {
            $output .= implode($separator, $subarray);
        }
        return $output;
}

echo implodeArrayofArrays($users);

// "user1@example.com, user2@example.com, admin1@example.com, admin2@example.com"