php 使用阿里云最新的短信服务类，仅一个类实现发送短信

官方上下载sdk ，太复杂，于是乎想用简单的方法，话不多说，直接上代码。

类文件代码：

<?php

class AliyunSms {
    
    protected $accessKeyId;
    protected $accessKeySecret;
    protected $signName;
    protected $templateCode;
    
    public function __construct($accessKeyId, $accessKeySecret, $signName, $templateCode) {
        $this->accessKeyId = $accessKeyId;
        $this->accessKeySecret = $accessKeySecret;
        $this->signName = $signName;
        $this->templateCode = $templateCode;
    }
    
    public function sendSMS($phone, $templateParam) {
        $params = array (
            'PhoneNumbers' => $phone,
            'SignName' => $this->signName,
            'TemplateCode' => $this->templateCode,
            'TemplateParam' => json_encode($templateParam),
        );
        
        $params['RegionId'] = 'cn-hangzhou';
        $params['Action'] = 'SendSms';
        $params['Version'] = '2017-05-25';
        $params['Format'] =