php版微信js-sdk支付接口类用法示例

<?php
if (isset($argc) && $argc >= 1 && $argv[0] == __file__) {
  //初始化pay的必要信息
  $pay = new wechatpay(array(
    wechatpay::appid => 'wx99dabzpiuq83985b8',
    wechatpay::appsercer => 'ac12e7e4abaer63hkoa0cc36a9663fa',
    wechatpay::partnerkey => 'bae4sfa3562rsfaq23s2045',
    wechatpay::partnerid => '1268969802',
    wechatpay::paysignkey => '9fqsxb3pk4ivocec4ycquy5zecs9leemjf2nn4b4ykooxpwaqdfwmezkt8onlbyawcut',
    wechatpay::signtype => 'sha1',
  ));
  //设置package 必要的参数 jsapi native都通用
  $pay->setparams(wechatpay::bank_type, "wx");
  $pay->setparams(wechatpay::body, "test");
  $pay->setparams(wechatpay::partner, $pay->partnerid);
  $pay->setparams(wechatpay::out_trade_no, commonutil::createnoncestr());
  $pay->setparams(wechatpay::total_fee, "1");
  $pay->setparams(wechatpay::fee_type, "1");
  $pay->setparams(wechatpay::timestamp, time());
  $pay->setparams(wechatpay::notify_url, "http://www.demo.com/notify");
  $pay->setparams(wechatpay::spbill_create_ip, "127.0.0.1");
  $pay->setparams(wechatpay::input_charset, "utf-8");
  //jsapi的签名json
  print_r($pay->createjsapipackage());
  //生成native xml
  print_r($pay->createnativepackage());
  //生成native url
  print_r($pay->createnativeurl("9701"));
}

{
  "appid":"wx9998ff5f4dede5b7",
  "package":"bank_type=wx&body=test&fee_type=1&input_charset=utf-8¬ify_url=http%3a%2f%2fwww.demo.com%2fnotify&out_trade_no=vf5qsswtu0hc2loh&partner=wx9998ff5f4dede5b7&spbill_create_ip=127.0.0.1×tamp=1409295711&total_fee=1&sign=fee0167bd0d89a88bf6850590ea889b6",
  "timestamp":1409295711,
  "noncestr":"vf5qsswtu0hc2loh",
  "paysign":"f816264c750923863c370a1739640244b0c2d39c",
  "signtype":"sha1"
}

<xml>
  <appid><![cdata[wx9998ff5f4dede5b7]]></appid>
  <package>
    <![cdata[bank_type=wx&body=test&fee_type=1&input_charset=utf-8¬ify_url=http%3a%2f%2fwww.demo.com%2fnotify&out_trade_no=gdl3what4saldead&partner=wx9998ff5f4dede5b7&spbill_create_ip=127.0.0.1×tamp=1409296124&total_fee=1&sign=bf949b85570644b939b369fd44b0c4a9]]>
  </package>
  <timestamp>1409296124</timestamp>
  <noncestr><![cdata[gdl3what4saldead]]></noncestr>
  <retcode>0</retcode>
  <reterrmsg><![cdata[ok]]></reterrmsg>
  <appsignature><![cdata[ca4a2467b817a62c38a9801fcf451f51692027bf]]></appsignature>
  <signmethod><![cdata[sha1]]></signmethod>
</xml>

<?php
class wechatpay {
  const
    bank_type = 'bank_type',
    body = 'body',
    partner = 'partner',
    out_trade_no = 'out_trade_no',
    timestamp = 'timestamp',
    total_fee = 'total_fee',
    fee_type = 'fee_type',
    notify_url = 'notify_url',
    spbill_create_ip = 'spbill_create_ip',
    input_charset = 'input_charset',
    appid = 'appid',
    appsercer = 'appsercer',
    paysignkey = 'appkey',
    partnerid = 'partnerid',
    partnerkey = 'partnerkey',
    signtype = 'signtype';
  public
    $params = array(), $partnerid = '';
  static protected
    $_instance;
  protected
    $_appid, $_appkey, $_signtype, $_partnerkey, $_appsercer;
  static public function getinstance(array $options = array()) {
    if (empty(self::$_instance)) {
      self::$_instance = new self ($options);
    }
    return self::$_instance;
  }
  public function __construct(array $options = array()){
    $this->_appid = $options[self::appid];
    $this->_appkey = $options[self::paysignkey];
    $this->_signtype = $options[self::signtype];
    $this->_partnerkey = $options[self::partnerkey];
    $this->_appsercer = $options[self::appsercer];
    $this->partnerid = $options[self::appid];
  }
  public function setparams($param, $paramvalue) {
    $this->params[commonutil::trimstring($param)] = commonutil::trimstring($paramvalue);
  }
  public function getparams($param) {
    return $this->params[$param];
  }
  protected function createnoncestr( $length = 16 ) {
    $chars = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz0123456789";
    $str ="";
    for ( $i = 0; $i < $length; $i++ ) {
      $str.= substr($chars, mt_rand(0, strlen($chars)-1), 1);
    }
    return $str;
  }
  public function checkparams(){
    //必要的9个参与签名的参数
    if($this->params[self::bank_type] == null || $this->params[self::body] == null || $this->params[self::partner] == null ||
      $this->params[self::out_trade_no] == null || $this->params[self::total_fee] == null || $this->params[self::fee_type] == null ||
      $this->params[self::notify_url] == null || $this->params[self::spbill_create_ip] == null || $this->params[self::input_charset] == null
    ) {
      return false;
    }
    return true;
  }
  /*
   * 生成package包
   * @params 初始化类时用setparams方法定义必要的9个参数
   * 排序后格式化url query形式 再md5signutil类签名，再给合url
   */
  protected function getpackagesign(){
    try {
      if (null == $this->_partnerkey || "" == $this->_partnerkey ) {
        throw new exception("密钥不能为空！" . "<br>");
      }
      $commonutil = new commonutil();
      ksort($this->params);
      $unsignparastring = $commonutil->formaturlquery($this->params, false);
      $parastring = $commonutil->formaturlquery($this->params, true);
      $md5signutil = new md5signutil();
      return $parastring . "&sign=" . $md5signutil->sign($unsignparastring,commonutil::trimstring($this->_partnerkey));
    } catch (exception $e) {
      echo ($e->getmessage());
    }
  }
  /*
   * 生成签名方法
   * @params appid appkey package timestamp noncestr 等参数而native事例代码中加上retcode reterrmsg两个参数
   */
  public function getpaysign($signobj){
    foreach ($signobj as $k => $v){
      $signparams[strtolower($k)] = $v;
    }
    try {
      if ($this->_appkey == "") {
        throw new exception("appkey为空！" . "<br>");
      }
      $signparams["appkey"] = $this->_appkey;
      ksort($signparams, sort_string);
      $commonutil = new commonutil();
      $signstring = $commonutil->formatpayurlquery($signparams, false);
      return sha1($signstring);
    } catch (exception $e) {
      echo ($e->getmessage());
    }
  }
  //js api 签名 其中noncestr是作为订单号 灌穿整个支付流程
  public function createjsapipackage(){
    try {
      if($this->checkparams() == false) {
        throw new exception("生成package参数缺失！" . "<br>");
      }
      $payobj["appid"] = $this->_appid;
      $payobj["package"] = $this->getpackagesign();
      $payobj["timestamp"] = $this->getparams(self::timestamp);
      $payobj["noncestr"] = $this->getparams(self::out_trade_no);
      $payobj["paysign"] = $this->getpaysign($payobj);
      $payobj["signtype"] = $this->_signtype;
      return json_encode($payobj);
    } catch (exception $e) {
      die($e->getmessage());
    }
  }
  /*
   * 构建发货状态数组 主要三个参数openid transid orderid
   */
  public function createdeliverpost(array $params) {
    $deliver = array();
    $deliver['appid'] = $this->_appid;
    $deliver['openid'] = $params['openid'];
    $deliver['transid'] = $params['transid'];
    $deliver['out_trade_no'] = $params['out_trade_no'];
    $deliver['deliver_timestamp'] = current_time('timestamp');
    $deliver['deliver_status'] = 1;
    $deliver['deliver_msg'] = 'ok';
    $deliver['app_signature'] = $this->getpaysign($deliver);
    $deliver['sign_method'] = 'sha1';
    return $deliver;
  }
  /*
   * 生成扫描或者点击原生url后，响应的xml格式
   * @params $retcode $reterrmsg 定义该商品的状态
   */
  public function createnativepackage($retcode = 0, $reterrmsg = "ok") {
    try {
      if ($this->checkparams() == false && $retcode == 0) {  //如果是正常的返回， 检查财付通的参数
        throw new exception("生成package参数缺失！" . "<br>");
      }
      $nativeobj["appid"] = $this->_appid;
      $nativeobj["package"] = $this->getpackagesign();
      $nativeobj["timestamp"] = $this->getparams(self::timestamp);
      $nativeobj["noncestr"] = $this->getparams(self::out_trade_no);
      $nativeobj["retcode"] = $retcode;
      $nativeobj["reterrmsg"] = $reterrmsg;
      $nativeobj["appsignature"] = $this->getpaysign($nativeobj);
      $nativeobj["signmethod"] = $this->_signtype;
      $commonutil = new commonutil();
      $xml = $commonutil->arraytoxml($nativeobj);
      exit($xml);
    }catch (exception $e) {
      echo ($e->getmessage());
    }
  }
  /*
   * 生成原生url 以订单号为参数 这是灌穿整个支付流程
   */
  public function createnativeurl($productid) {
    $commonutil = new commonutil();
    $nativeobj["appid"] = $this->_appid;
    $nativeobj["productid"] = urlencode($productid);
    $nativeobj["timestamp"] = time();
    $nativeobj["noncestr"] = commonutil::createnoncestr();
    $nativeobj["sign"] = $this->getpaysign($nativeobj);
    $nativestring = $commonutil->formatpayurlquery($nativeobj, false);
    return "weixin://wxpay/bizpayurl?".$nativestring;
  }
  /*
   * 取ip地址
   */
  public function getip(){
    switch(true) {
      case !empty($_server["http_client_ip"]):
        $ip = $_server["http_client_ip"];
        break;
      case !empty($_server["http_x_forwarded_for"]):
        $ip = $_server["http_x_forwarded_for"];
        break;
      case !empty($_server["remote_addr"]):
        $ip = $_server["remote_addr"];
        break;
      default:
        $ip = "127.0.0.1";
    }
    return $ip;
  }
}
class md5signutil {
  public function sign($content, $key) {
    try {
      if (null == $key) {
        throw new exception("财付通签名key不能为空！" . "<br>");
      }
      if (null == $content) {
        throw new exception("财付通签名内容不能为空" . "<br>");
      }
      $signstr = $content . "&key=" . $key;
      return strtoupper(md5($signstr));
    } catch (exception $e) {
      echo ($e->getmessage());
    }
  }
  public static function verifysignature($content, $sign, $md5key) {
    $signstr = $content . "&key=" . $md5key;
    $calculatesign = strtolower(md5($signstr));
    $tenpaysign = strtolower($sign);
    return $calculatesign == $tenpaysign;
  }
}
class commonutil {
  public function genallurl($tourl, $paras) {
    $allurl = null;
    if (null == $tourl) {
      die("tourl is null");
    }
    if (strripos($tourl,"?") =="") {
      $allurl = $tourl . "?" . $paras;
    } else {
      $allurl = $tourl . "&" . $paras;
    }
    return $allurl;
  }
  //订单号，可根据实际自定义
  static public function createorderno() {
    $nonce = commonutil::createnoncestr(4);
    return strtoupper(date('ymds').substr(microtime(),2,4).$nonce);
  }
  //随机字符串
  static public function createnoncestr( $length = 16 ) {
    $chars = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz0123456789";
    $str ="";
    for ( $i = 0; $i < $length; $i++ ) {
      $str.= substr($chars, mt_rand(0, strlen($chars)-1), 1);
    }
    return $str;
  }
  public function splitparastr($src, $token) {
    $resmap = array();
    $items = explode($token,$src);
    foreach ($items as $item){
      $paraandvalue = explode("=",$item);
      if ($paraandvalue != "") {
        $resmap[$paraandvalue[0]] = $paraandvalue[1];
      }
    }
    return $resmap;
  }
  static function trimstring($value) {
    $ret = null;
    if (null != $value) {
      $ret = $value;
      if (strlen($ret) == 0) {
        $ret = null;
      }
    }
    return $ret;
  }
  public function formaturlquery($paramap, $urlencode) {
    $buff = "";
    ksort($paramap, sort_string);
    foreach ($paramap as $k => $v) {
      if (null != $v && "null" != $v && "sign" != $k) {
        if($urlencode) {
          $v = urlencode($v);
        }
        $buff .= $k . "=" . $v . "&";
      }
    }
    $reqpar = '';
    if (strlen($buff) > 0) {
      $reqpar = substr($buff, 0, strlen($buff)-1);
    }
    return $reqpar;
  }
  public function formatpayurlquery($paramap, $urlencode) {
    $buff = "";
    ksort($paramap, sort_string);
    foreach ($paramap as $k => $v) {
      if($urlencode){
        $v = urlencode($v);
      }
      $buff .= strtolower($k) . "=" . $v . "&";
    }
    $reqpar = '';
    if (strlen($buff) > 0) {
      $reqpar = substr($buff, 0, strlen($buff)-1);
    }
    return $reqpar;
  }
  /*
   * 输出一级数组的xml格式
   */
  public function arraytoxml($arr) {
    $xml = "<xml>";
    foreach ($arr as $key=>$val) {
      if ($key == 'timestamp' || $key == 'retcode') {
        $xml.="<".$key.">".$val."</".$key.">";
      } else
        $xml.="<".$key."><![cdata[".$val."]]></".$key.">";
    }
    $xml .= "</xml>";
    return $xml;
  }
}