PHP支付宝当面付2.0代码

//支付宝条码支付，直接调用ali_tiaoma_pay方法，把条码和金额传进去就ok
function ali_tiaoma_pay($tiaoma,$price){
 
  $data[\'scene\'] = \'bar_code\'; //支付场景
  $data[\'out_trade_no\'] = date(\"Ymd\").rand(10000,99999); //订单号
  $data[\'total_amount\'] = $price; //支付金额
  $data[\'auth_code\'] = $tiaoma;  //支付授权码
  $data[\'subject\'] = \'订单标题\'; //订单标题
  $data[\'body\'] = \'订单说明\'; //订单说明
  $data = json_encode($data);

  $params[\'app_id\'] = $alipay_account;
  $params[\'method\'] = \'alipay.trade.pay\';
  $params[\'charset\'] = \'utf-8\';
  $params[\'sign_type\'] = \'RSA2\';
  $params[\'timestamp\'] = date(\"Y-m-d H:i:s\");
  $params[\'version\'] = \'1.0\';
  $params[\'notify_url\'] = \"\"; 
  $params[\'biz_content\'] = $data;
  ksort($params); //对将要签名的数组排序
 
  $string = $this->toUrlParam($params); //将数组转换成字符串
  $params[\'sign\'] = $this->alipay_sign($string); //将字符串签名
  $url = \'https://openapi.alipay.com/gateway.do?\' . http_build_query($params);
  $return = file_get_contents($url); //打开支付请求连接 获取二维码地址
  $return = json_decode($return, true); //将返回的字符串转换为数组
  return $return;
}
 
 
//app支付宝签名
function alipay_sign($data, $signType = \"RSA2\") 
  $res = \"-----BEGIN RSA PRIVATE KEY-----\\n\" .
    wordwrap(\'你的商户私钥，必须和公匙匹配\', 64, \"\\n\", true) .
    \"\\n-----END RSA PRIVATE KEY-----\";
  ($res) or die(\'您使用的私钥格式错误，请检查RSA私钥配置\');
  if (\"RSA2\" == $signType) {
    openssl_sign($data, $sign, $res, \"SHA256\");
  } else {
    openssl_sign($data, $sign, $res);
  }
  $sign =  64_encode($sign);
  return $sign;
}
 
/*
 * 格式化参数格式化成url参数
*/
function toUrlParam($param){
  $buff = \"\";
  foreach($param as $k => $v)
  {
    if($k != \"sign\" && $v != \"\" && !is_array($v)){
      $buff .= $k.\"=\".$v.\"&\";
    }
  }
 
  $buff = trim($buff, \"&\");
  return $buff;
}