$contacts = array("18*********", "15*********");
foreach ($contacts as $contact) {
    $multi = new Multi();
    $multi->setTo($contact);
    $multi->addVar("code", rand(00, 999999));
    $submail->addMulti($multi->build());
}
/*
|multi 参数示例三
|多文本变量示例(以下示例为模板中包含@var(name),@var(code1),@var(code2)分别对应联系人的三个文本变量)
|--------------------------------------------------------------------------
*/
$contacts = array(array("to" => "18*********", "vars" => array("name" => "jack", "code1" => "FAD62979791", "code1" => "FAD62979792")), array("to" => "15*********", "vars" => array("name" => "tom", "code1" => "FAD62979793", "code1" => "FAD62979794")));
foreach ($contacts as $contact) {
    $multi = new Multi();
    $multi->setTo($contact['to']);
    foreach ($contact['vars'] as $key => $value) {
        $multi->addVar($key, $value);
    }
    $submail->addMulti($multi->build());
}
/*
|必选参数
|--------------------------------------------------------------------------
|设置短信模板ID
|--------------------------------------------------------------------------
*/
$submail->SetProject('2glEg1');
/*
|调用 multixsend 方法发送短信
|--------------------------------------------------------------------------