parameters[$this->trimString($parameter)] = $this->trimString($parameterValue);
}
/**
* 作用：设置标配的请求参数，生成签名，生成接口参数xml
*/
function createXml()
{
$this->parameters["appid"] = APPID;//公众账号ID
$this->parameters["mch_id"] = MCHID;//商户号
$this->parameters["nonce_str"] = $this->createNoncestr();//随机字符串
$this->parameters["sign"] = $this->getSign($this->parameters);//签名
return $this->arrayToXml($this->parameters);
}
/**
* 作用：post请求xml
*/
function postXml()
{
$xml = $this->createXml();
$this->response = $this->postXmlCurl($xml,$this->url,$this->curl_timeout);
return $this->response;
}
/**
* 作用：使用证书post请求xml
*/
function postXmlSSL()
{
$xml = $this->createXml();
$this->response = $this->postXmlSSLCurl($xml,$this->url,$this->curl_timeout);
return $this->response;
}
/**
* 作用：获取结果，默认不使用证书
*/
function getResult()
{
$this->postXml();
$this->result = $this->xmlToArray($this->response);
return $this->result;
}
function trimString($value)
{
$ret = null;
if (null != $value)
{
$ret = $value;
if (strlen($ret) == 0)
{
$ret = null;
}
}
return $ret;
}
/**
* 作用：产生随机字符串，不长于32位
*/
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 $str;
}
/**
* 作用：格式化参数，签名过程需要使用
*/
function formatBizQueryParaMap($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 $reqPar;
}
/**
* 作用：生成签名
*/
public function getSign($Obj)
{
foreach ($Obj as $k => $v)
{
$Parameters[$k] = $v;
}
//签名步骤一：按字典序排序参数
ksort($Parameters);
$String = $this->formatBizQueryParaMap($Parameters, false);
//echo '【string1】'.$String.'';
//签名步骤二：在string后加入KEY
$String = $String."&key=".KEY;
//echo "【string2】".$String."";
//签名步骤三：MD5加密
$String = md5($String);
//echo "【string3】 ".$String."";
//签名步骤四：所有字符转为大写
$result_ = strtoupper($String);
//echo "【result】 ".$result_."";
return $result_;
}
/**
* 作用：array转xml
*/
function arrayToXml($arr)
{
$xml = "";
foreach ($arr as $key=>$val)
{
if (is_numeric($val))
{
$xml.="<".$key.">".$val."";
}
else
$xml.="<".$key.">";
}
$xml.="";
return $xml;
}
/**
* 作用：将xml转为array
*/
public function xmlToArray($xml)
{
//将XML转为array
$array_data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
return $array_data;
}
/**
* 作用：以post方式提交xml到对应的接口url
*/
public function postXmlCurl($xml,$url,$second=30)
{
//初始化curl
$ch = curl_init();
//设置超时
curl_setopt($ch, CURLOP_TIMEOUT, $second);
//这里设置代理，如果有的话
//curl_setopt($ch,CURLOPT_PROXY, '8.8.8.8');
//curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
curl_setopt($ch,CURLOPT_URL, $url);
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
//设置header
curl_setopt($ch, CURLOPT_HEADER, FALSE);
//要求结果为字符串且输出到屏幕上
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
//post提交方式
curl_setopt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
//运行curl
$data = curl_exec($ch);
curl_close($ch);
//返回结果
if($data)
{
curl_close($ch);
return $data;
}
else
{
$error = curl_errno($ch);
echo "curl出错，错误码:$error"."
";
echo "错误原因查询";
curl_close($ch);
return false;
}
}
/**
* 作用：使用证书，以post方式提交xml到对应的接口url
*/
function postXmlSSLCurl($xml,$url,$second=30)
{
$ch = curl_init();
//超时时间
curl_setopt($ch,CURLOPT_TIMEOUT,$second);
//这里设置代理，如果有的话
//curl_setopt($ch,CURLOPT_PROXY, '8.8.8.8');
//curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
curl_setopt($ch,CURLOPT_URL, $url);
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
//设置header
curl_setopt($ch,CURLOPT_HEADER,FALSE);
//要求结果为字符串且输出到屏幕上
curl_setopt($ch,CURLOPT_RETURNTRANSFER,TRUE);
//设置证书
//使用证书：cert 与 key 分别属于两个.pem文件
//默认格式为PEM，可以注释
curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
curl_setopt($ch,CURLOPT_SSLCERT, SSLCERT_PATH);
//默认格式为PEM，可以注释
curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
curl_setopt($ch,CURLOPT_SSLKEY, SSLKEY_PATH);
//post提交方式
curl_setopt($ch,CURLOPT_POST, true);
curl_setopt($ch,CURLOPT_POSTFIELDS,$xml);
$data = curl_exec($ch);
//返回结果
if($data){
curl_close($ch);
return $data;
}
else {
$error = curl_errno($ch);
echo "curl出错，错误码:$error"."
";
echo "错误原因查询";
curl_close($ch);
return false;
}
}
/**
* 作用：打印数组
*/
function printErr($wording='',$err='')
{
print_r('');
echo $wording."";
var_dump($err);
print_r('');
}
function __construct()
{
//设置接口链接
$this->url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
//设置curl超时时间
$this->curl_timeout = CURL_TIMEOUT;
}
/**
* 获取prepay_id
*/
function getPrepayId()
{
$this->postXml();
$this->result = $this->xmlToArray($this->response);
//dump($this->result);
$prepay_id = $this->result["prepay_id"];
return $prepay_id;
}
}
?>