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 = "

%s

0

";

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

/**

* 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 = "

%s

0

";

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，也希望大家多多支持脚本之家。