PHP實(shí)現(xiàn)微信支付(jsapi支付)流程步驟詳解

curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,TRUE); 
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,2);//嚴(yán)格校驗(yàn) 

curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE); 
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,2);//嚴(yán)格校驗(yàn)

const APPID = '公眾賬號(hào)APPID'; 
const MCHID = '商戶號(hào)'; 
const KEY = '商戶支付密鑰'; 
const APPSECRET = '公眾帳號(hào)secert'; 

if($needSign == true  
 $this->GetReturn_code($return_code) == "SUCCESS") 
{ 
 $this->SetSign(); 
} 

if($needSign == true  
 $this->GetReturn_code() == "SUCCESS") 
{ 
 $this->SetSign(); 
} 

//①、獲取用戶openid 
$tools = new JsApiPay(); 
$openId = $tools->GetOpenid(); 

//②、統(tǒng)一下單 
$input = new WxPayUnifiedOrder(); 
$input->SetBody("test"); 
$input->SetAttach("test"); 
$input->SetOut_trade_no(WxPayConfig::MCHID.date("YmdHis")); 
$input->SetTotal_fee("1"); 
$input->SetTime_start(date("YmdHis")); 
$input->SetTime_expire(date("YmdHis", time() + 600)); 
$input->SetGoods_tag("test"); 
$input->SetNotify_url("http://paysdk.weixin.qq.com/example/notify.php"); 
$input->SetTrade_type("JSAPI"); 
$input->SetOpenid($openId); 
$order = WxPayApi::unifiedOrder($input); 
echo 'font color="#f00">b>統(tǒng)一下單支付單信息/b>/font>br/>'; 
printf_info($order); 
$jsApiParameters = $tools->GetJsApiParameters($order); 

$input->SetBody("test"); 

$input->SetOut_trade_no(WxPayConfig::MCHID.date("YmdHis")); 

$input->SetTotal_fee("1");

$input->SetNotify_url(http://paysdk.weixin.qq.com/example/notify.php);

$input->SetAttach("test"); 

script type="text/javascript"> 
//調(diào)用微信JS api 支付 
function jsApiCall() 
{ 
 WeixinJSBridge.invoke( 
  'getBrandWCPayRequest', 
  ?php echo $jsApiParameters; ?>, 
  function(res){ 
   WeixinJSBridge.log(res.err_msg); 
   alert(res.err_code+res.err_desc+res.err_msg); 
  } 
 ); 
} 
function callpay() 
{ 
 if (typeof WeixinJSBridge == "undefined"){ 
  if( document.addEventListener ){ 
   document.addEventListener('WeixinJSBridgeReady', jsApiCall, false); 
  }else if (document.attachEvent){ 
   document.attachEvent('WeixinJSBridgeReady', jsApiCall); 
   document.attachEvent('onWeixinJSBridgeReady', jsApiCall); 
  } 
 }else{ 
  jsApiCall(); 
 } 
} 
/script> 

$notify = new PayNotifyCallBack(); 
$notify->Handle(false); 

/** 
 * 
 * 回調(diào)入口 
 * @param bool $needSign 是否需要簽名輸出 
 */ 
final public function Handle($needSign = true) 
{ 
 $msg = "OK"; 
 //當(dāng)返回false的時(shí)候，表示notify中調(diào)用NotifyCallBack回調(diào)失敗獲取簽名校驗(yàn)失敗，此時(shí)直接回復(fù)失敗 
 $result = WxpayApi::notify(array($this, 'NotifyCallBack'), $msg); 
 if($result == false){ 
  $this->SetReturn_code("FAIL"); 
  $this->SetReturn_msg($msg); 
  $this->ReplyNotify(false); 
  return; 
 } else { 
  //該分支在成功回調(diào)到NotifyCallBack方法，處理完成之后流程 
  $this->SetReturn_code("SUCCESS"); 
  $this->SetReturn_msg("OK"); 
 } 
 $this->ReplyNotify($needSign); 
} 

$result = WxpayApi::notify(array($this, 'NotifyCallBack'), $msg); 

/** 
 * 
 * 支付結(jié)果通用通知 
 * @param function $callback 
 * 直接回調(diào)函數(shù)使用方法: notify(you_function); 
 * 回調(diào)類成員函數(shù)方法:notify(array($this, you_function)); 
 * $callback 原型為：function function_name($data){} 
 */ 
public static function notify($callback, $msg) 
{ 
 //獲取通知的數(shù)據(jù) 
 $xml = $GLOBALS['HTTP_RAW_POST_DATA']; 
 //file_put_contents('log.txt',$xml,FILE_APPEND); 
 //如果返回成功則驗(yàn)證簽名 
 try { 
  $result = WxPayResults::Init($xml); 
 } catch (WxPayException $e){ 
  $msg = $e->errorMessage(); 
  return false; 
 } 
  
 return call_user_func($callback, $result); 
}