publicfunctionindex(){$order= ['appid'=>'123456','mch_id'=>'56789','nonce_str'=>uniqid(md5(time())),'body'=>'測試商品','out_trade_no'=>87654321,//商戶唯一訂單號，可包含字母序'total_fee'=>100,//訂單金額，單位/分'spbill_create_ip'=>'123.12.12.123',//產(chǎn)生訂單號的服務(wù)器IP'notify_url'=>'http://www.yoursite.com/wxpay',//接受微信異步通知地址'trade_type'=>'APP'];//用戶http_build_query()將數(shù)據(jù)轉(zhuǎn)成URL鍵值對形式$sign= http_build_query($order);//$sign = "appid=123456&mch_id=56789&nonce_str=c6079b98e6aeb4a98f687800c887f6cc58df95d72cd69&body=%E6%B5%8B%E8%AF%95%E5%95%86%E5%93%81&out_trade_no=87654321&total_fee=100&spbill_create_ip=123.12.12.123?ify_url=http%3A%2F%2Fwww.yoursite.com%2Fwxpay&trade_type=APP";//MD5處理，默認支持MD5$sign= md5($sign);//轉(zhuǎn)大寫$sign= strtoupper($sign);$order['sign'] =$sign;//轉(zhuǎn)換成一維XML格式$xml='';foreach($orderas$k=>$v){$xml.='<'.$k.'>';? ? ? ? }$xml.='';//CURL會話$ch= curl_init();// 設(shè)置curl允許執(zhí)行的最長秒數(shù)curl_setopt($ch, CURLOPT_TIMEOUT,3);? ? ? ? curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);? ? ? ? curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);// 獲取的信息以文件流的形式返回，而不是直接輸出。curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);//發(fā)送一個常規(guī)的POST請求。curl_setopt($ch, CURLOPT_POST,1);? ? ? ? curl_setopt($ch, CURLOPT_URL,'https://api.mch.weixin.qq.com/pay/unifiedorder');//要傳送的所有數(shù)據(jù)curl_setopt($ch, CURLOPT_POSTFIELDS,$order);// 執(zhí)行操作$response= curl_exec($ch);//將xml格式的$response 轉(zhuǎn)成數(shù)組$response= json_decode( json_encode( simplexml_load_string($response,'SimpleXMLElement', LIBXML_NOCDATA) ),true);//若預下單成功，return_code 和result_code為SUCCESS。if($response['return_code'] ==='SUCCESS'&&$response['result_code'] ==='SUCCESS') {//返回trade_type和prepay_id供前端調(diào)用echojson_encode( ['trade_type'=>$response['trade_type'],'prepay_id'=>$response['prepay_id']] );? ? ? ? }? ? }