這篇文章主要介紹了關於基於php開發app微信支付接口，有著一定的參考價值，現在分享給大家，有需要的朋友可以參考一下
定義好商家支付資訊
define(APPID, $payment ['appId']); // appid
define(APPSECRET, $payment ['appSecret']); // appSecret
define(MCHID , $payment ['partnerId']);//商家號碼
define(KEY, $payment ['partnerKey']); // 通加密字串
define(NOTIFY_URL, $return_url ); // 成功回呼url
//签名所需
$signArray = array(
'appid' => $payment['appId'], //appid
'mch_id' => $payment['partnerId'],
'nonce_str' => self::createNoncestr(),
'out_trade_no' => $order['order_sn'],
'body' => $order['body'],
"total_fee" => $order ['order_amount'],
"notify_url" => $return_url,
"spbill_create_ip" => $_SERVER["REMOTE_ADDR"],
"trade_type" => "APP",
);登入後複製
$sign=self::getSign($signArray);
//统一下单
$goPay = array(
'appid' => $payment['appId'], //appid
'mch_id' => $payment['partnerId'],
'nonce_str' => $signArray['nonce_str'], //生成随机字符串
'sign' => $sign,
'out_trade_no' => $order['order_sn'],
"total_fee" => $order ['order_amount'],
'body' => $order['body'],
"notify_url" => $return_url,
"spbill_create_ip" => $_SERVER["REMOTE_ADDR"],
"trade_type" => "APP",
);
//转化xml
$goPayXml=self::arrayToXml($goPay);
$result=self::sendPrePayCurl($goPayXml);
return $result;登入後複製
產生隨機字串函數
//随机生成字符串
public function createNoncestr($length = 32) {
$chars = "abcdefghijklmnopqrstuvwxyz0123456789";
$str = "";
for ($i = 0; $i < $length; $i++) {
$str.= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
}
return $str;
}登入後複製
簽名函數
/**
* 作用：生成签名
*/
public function getSign($Obj) {
foreach ($Obj as $k => $v) {
//if($k == 'code') continue;
//if($k == 'from') continue;
$Parameters[$k] = $v;
}
//签名步骤一：按字典序排序参数
ksort($Parameters);
$String = self::formatBizQueryParaMap($Parameters, false);
//echo '【string1】'.$String.'</br>';
//签名步骤二：在string后加入KEY
$String = $String . "&key=" . KEY;
//echo "【string2】".$String."</br>";
//签名步骤三：MD5加密
$String = md5($String);
//echo "【string3】 ".$String."</br>";
//签名步骤四：所有字符转为大写
$result_ = strtoupper($String);
//echo "【result】 ".$result_."</br>";
return $result_;
}登入後複製
//格式化签名所需参数
public function formatBizQueryParaMap($paraMap, $urlencode) {
$buff = "";
ksort($paraMap);
foreach ($paraMap as $k => $v) {
if ($urlencode) {
$v = urlencode($v);
}
//$buff .= strtolower($k) . "=" . $v . "&";
$buff .= $k . "=" . $v . "&";
}
$reqPar;
if (strlen($buff) > 0) {
$reqPar = substr($buff, 0, strlen($buff) - 1);
}
return $reqPar;
}登入後複製
把所要請求參數組裝xml
/**
* 作用：array转xml,把请求参数组装xml
*/
function arrayToXml($arr)
{
$xml = "<xml>";
foreach ($arr as $key=>$val)
{
if (is_numeric($val))
{
$xml.="<".$key.">".$val."</".$key.">";
}
else
$xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
}
$xml.="</xml>";
return $xml;
}登入後複製
//通过curl发送数据给微信接口的函数
public function sendPrePayCurl($xmlData) {
$url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
$header[] = "Content-type: text/xml";
$curl = curl_init();
curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_POST, 1);
curl_setopt($curl, CURLOPT_POSTFIELDS, $xmlData);
$data = curl_exec($curl);
if (curl_errno($curl)) {
print curl_error($curl);
}
curl_close($curl);
return self::XMLDataParse($data);
}
//xml格式数据解析函数
public static function XMLDataParse($data) {
$msg = array();
$msg = (array) simplexml_load_string($data, 'SimpleXMLElement', LIBXML_NOCDATA);
return $msg;
}登入後複製
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