php微信公众号开发之欢迎老朋友

本文实例为大家分享了php微信公众号开发之欢迎老朋友的具体代码，供大家参考，具体内容如下

介绍数据库

insert
iconv 进行数据库转码函数
fromusername

关键代码如下：

$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
$fromUsername = $postObj- FromUserName;
$toUsername = $postObj- ToUserName;
$keyword = trim($postObj- Content);
$time = time();
$textTpl = "<xml 
      <ToUserName <![CDATA[%s]] </ToUserName 
      <FromUserName <![CDATA[%s]] </FromUserName 
      <CreateTime %s</CreateTime 
      <MsgType <![CDATA[%s]] </MsgType 
       <Content <![CDATA[%s]] </Content 
       <FuncFlag 0</FuncFlag 
    </xml ";  

     if(!empty( $keyword ))
     {
       //用 户 名 : $user
       //密　　码 : $pwd
       //主库域名 : $host
       //从库域名 : SAE_MYSQL_HOST_S
       //端　　口 : $port
       //数据库名 : $dbname

       $dbname = "app_dq095";
       $host = "w.rdc.sae.sina.com.cn";
       $port = "3306";
       $user = "4k514n103z";
       $pwd = "2402314li2j1i5im1xy2xizj5y332w2x41k2z203";

       /*接着调用mysql_connect()连接服务器*/
       // 连主库
       $db = mysql_connect($host,$user,$pwd);

       if(!$db){
         die("Connect Server Failed: " . mysql_error($db));
       }

       /*连接成功后立即调用mysql_select_db()选中需要连接的数据库*/
       if (!mysql_select_db($dbname)) {
         die("Select Database Failed: " . mysql_error($db));
       }
   mysql_query("set names utf-8",$db); 

       /*至此连接已完全建立，就可对当前数据库进行相应的操作了*/
       /*！！！注意，无法再通过本次连接调用mysql_select_db来切换到其它数据库了！！！*/
       /* 需要再连接其它数据库，请再使用mysql_connect+mysql_select_db启动另一个连接*/

       /**
       * 接下来就可以使用其它标准php mysql函数操作进行数据库操作
       */

       $sql="SELECT * FROM `welcome`WHERE `user`= '" . iconv("UTF-8","GBK",$fromUsername) . "'";
       $query=mysql_query($sql);
       $rs=mysql_fetch_array($query);
       $b= $rs['user'];
       $c=iconv("GBK","UTF-8",$b);
       $msgType = "text";
       if ($c==$fromUsername)
       {
         $contentStr = "欢迎老朋友!";
       }else{
        $sql="INSERT INTO `welcome`(`id`,`user`) VALUES (NULL,'{$fromUsername}')";
  mysql_query($sql);
$contentStr = "欢迎新朋友!";
       }

       $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);         
       echo $resultStr;
       mysql_close($db);
     }else{
         echo "Input something...";
 }

index.php代码如下

<?php
/**
* wechat php test
*/
//define your token
define("TOKEN", "weixin");
$wechatObj = new wechatCallbackapiTest();
$wechatObj- responseMsg();
class wechatCallbackapiTest
{
public function valid()
{
$echoStr = $_GET["echostr"];
//valid signature , option
if($this- checkSignature()){
echo $echoStr;
exit;
}
}
public function responseMsg()
{
//get post data, May be due to the different environments
$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
//extract post data
if (!empty($postStr)){
$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
$fromUsername = $postObj- FromUserName;
$toUsername = $postObj- ToUserName;
$keyword = trim($postObj- Content);
$time = time();
$textTpl = "<xml 
<ToUserName <![CDATA[%s]] </ToUserName 
<FromUserName <![CDATA[%s]] </FromUserName 
<CreateTime %s</CreateTime 
<MsgType <![CDATA[%s]] </MsgType 
<Content <![CDATA[%s]] </Content 
<FuncFlag 0</FuncFlag 
</xml ";  
if(!empty( $keyword ))
{
//用 户 名 : $user
//密　　码 : $pwd
//主库域名 : $host
//从库域名 : SAE_MYSQL_HOST_S
//端　　口 : $port
//数据库名 : $dbname
$dbname = "app_dq095";
$host = "w.rdc.sae.sina.com.cn";
$port = "3306";
$user = "4k514n103z";
$pwd = "2402314li2j1i5im1xy2xizj5y332w2x41k2z203";
/*接着调用mysql_connect()连接服务器*/
// 连主库
$db = mysql_connect($host,$user,$pwd);
if(!$db){
die("Connect Server Failed: " . mysql_error($db));
}
/*连接成功后立即调用mysql_select_db()选中需要连接的数据库*/
if (!mysql_select_db($dbname)) {
die("Select Database Failed: " . mysql_error($db));
}
mysql_query("set names utf-8",$db); 
/*至此连接已完全建立，就可对当前数据库进行相应的操作了*/
/*！！！注意，无法再通过本次连接调用mysql_select_db来切换到其它数据库了！！！*/
/* 需要再连接其它数据库，请再使用mysql_connect+mysql_select_db启动另一个连接*/
/**
* 接下来就可以使用其它标准php mysql函数操作进行数据库操作
*/
$sql="SELECT * FROM `welcome`WHERE `user`= '" . iconv("UTF-8","GBK",$fromUsername) . "'";
$query=mysql_query($sql);
$rs=mysql_fetch_array($query);
$b= $rs['user'];
$c=iconv("GBK","UTF-8",$b);
$msgType = "text";
if ($c==$fromUsername)
{
$contentStr = "欢迎老朋友!";
}else{
$sql="INSERT INTO `welcome`(`id`,`user`) VALUES (NULL,'{$fromUsername}')";
mysql_query($sql);
$contentStr = "欢迎新朋友!";
}
$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);         
echo $resultStr;
mysql_close($db);
}else{
echo "Input something...";
}
}else {
echo "";
exit;
}
}
private function checkSignature()
{
$signature = $_GET["signature"];
$timestamp = $_GET["timestamp"];
$nonce = $_GET["nonce"];  
$token = TOKEN;
$tmpArr = array($token, $timestamp, $nonce);
sort($tmpArr);
$tmpStr = implode( $tmpArr );
$tmpStr = sha1( $tmpStr );
if( $tmpStr == $signature ){
return true;
}else{
return false;
}
}
}
?

以上就是本文的全部内容，希望对大家的学习有所帮助。