How to backup database without mysqldump

index.php

<?php

# https://github.com/ifsnop/mysqldump-php

require_once('vendor/autoload.php');

use Ifsnop\Mysqldump as IMysqldump;

$host = 'localhost';
$db   = 'database_name';
$user = 'db_username';
$pass = 'db_password';

try {
    $dump = new IMysqldump\Mysqldump('mysql:host=' . $host . ';dbname=' . $db, $user, $pass);
    $dump->start(getcwd() . '/' . $db . '-' . date('YmdHis') . '.sql');
} catch (\Exception $e) {
    echo 'mysqldump-php error: ' . $e->getMessage();
}