A Simple of using zimbra api in yii2 webapp

ZimbraHelpers.php

<?php
// Author: Imam Omar Mochtar (iomarmochtar@gmail.com)

namespace app\models;
use Yii;
use Zimbra\Admin\AdminFactory;
use Zimbra\Admin\Request\CreateAccount;
use Zimbra\Struct\KeyValuePair;
use Zimbra\Struct\AccountSelector;
use Zimbra\Enum\AccountBy;

class ZimbraHelpers {

    public static function getApi(){
        $z = Yii::$app->params['zimbra'];
        $url = 'https://'.$z['host'].':'.$z['port'].'/service/admin/soap';
        $api = AdminFactory::instance($url);
        $api->auth($z['username'], $z['password']);
        return $api;
    }

    public static function convertKV($attrs){
        $_attrs = [];
        foreach($attrs as $k => $v){
            $_attrs[] = new KeyValuePair($k, $v);
        }
        return $_attrs;
    }

    public static function createAccount($email, $password, $attrs=[]){
        $api = self::getApi();
        return $api->createAccount($email, $password, self::convertKV($attrs));
    }

    public static function getAccountId($api, $email){
        $account = new AccountSelector(AccountBy::NAME(), $email);
        $acts = $api->getAccount($account, null, ['zimbraId']);
        return $acts->account->id;
    }

    public static function modifyAccount($email, $attrs){
        $api = self::getApi();
        $accountId = self::getAccountId($api, $email);
        return $api->modifyAccount($accountId, self::convertKV($attrs));
    }

    public static function renameAccount($email, $newEmail){
        $api = self::getApi();
        $accountId = self::getAccountId($api, $email);
        return $api->renameAccount($accountId, $newEmail);
    }
}