定义好商户支付信息
define(appid, $payment ['appid']); // appid
define(appsecret, $payment ['appsecret']); // appsecret
define(mchid, $payment ['partnerid']);//商户号
define(key, $payment ['partnerkey']); // 通加密串
define(notify_url, $return_url); // 成功回调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", );
$sign=self::getsign($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 $result;
生成随机字符串函数
//随机生成字符串 public function createnoncestr($length = 32) { $chars = "abcdefghijklmnopqrstuvwxyz0123456789"; $str = ""; for ($i = 0; $i < $length; $i++) { $str.= substr($chars, mt_rand(0, strlen($chars) - 1), 1); } return $str; }
签名函数
/** * 作用：生成签名 */ public function getsign($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 $result_; }
//格式化签名所需参数 public function formatbizqueryparamap($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 $reqpar; }
把所要请求参数组装xml
/** * 作用：array转xml,把请求参数组装xml */ function arraytoxml($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 $xml; }
//通过curl发送数据给微信接口的函数 public function sendprepaycurl($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; }
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以上就是基于php开发app微信支付接口的详细内容。