fusian/fusiancrm/service/common/pay/rtw/PayUtils.php

<?php
namespace common\pay\rtw;

use Yii;
use yii\helpers\VarDumper;

class PayUtils
{
    /**
     * @param array $data
     * @return string 
     */
    public static function makeSign($data, $md5Key)
    {
        $str = '';
		ksort($data);
        foreach ($data as $key => $value) {
            $str .= "{$key}={$value}&";
        }
		Yii::warning('签名参数，' . $str.$md5Key, __METHOD__);
        return md5($str  . $md5Key);
    }
	
	/**
     * 发送post请求
     * @param string $url 请求地址
     * @param array $post_data post键值对数据
     * @return string
     */
    public static function sendPost($url, $post_data) {

        $postdata = http_build_query($post_data);
        $options = array(
            'http' => array(
                'method' => 'POST',
                'header' => 'Content-type:application/x-www-form-urlencoded',
                'content' => $postdata,
                'timeout' => 15 * 60 // 超时时间（单位:s）
            )
        );
        $context = stream_context_create($options);
        $result = file_get_contents($url, false, $context);

        return $result;
    }
}