First of all, go to the WeChat public platform to register an account (there are quite a lot of things to fill in for registration). After registering, log in. You can see the "Developer Center" on the left. It seems that you need to complete some information before opening the Developer Center. Just follow the steps to complete it. After entering the developer center, go to edit first
Modify the configuration. When modifying the configuration, please note:
The URL is a PHP script under your own domain name (read below for a demo of the script). This script is used to interface with the WeChat interface. For example http://www.example.com/weixin.php
Token is a constant defined in the above script. For example, it is defined in your PHP script:
define("TOKEN", "my_weixin");
Then, when filling in the Token, you fill in abcdefgh
EncodingAESKey is used for message encryption. You can write a 43-digit combination of numbers and letters yourself, or you can choose "randomly generated". Generally, randomly generated is enough.
After filling it out, save it (if it prompts that the token verification failed when saving, please confirm that the token is consistent and click several more times to save it).
After saving, click "Open" next to the modified configuration.
Then, you can edit your PHP script. (If you don’t have your own domain name, you can use Sina Cloud’s free SAE, and it’s best to complete real-name authentication)
The script of the demo is as follows: follow the public platform (for example, after the subscription account), the function is: enter hehe to return hello world!!! If you enter other characters, return to enter heeh and try.
header('content-type:text/html;charset=utf-8'); define("TOKEN", "my_weixin"); //define your token $wx = new wechatCallbackapiTest(); if($_GET['echostr']){ $wx->valid(); //如果发来了echostr则进行验证 }else{ $wx->responseMsg(); //如果没有echostr,则返回消息 } class wechatCallbackapiTest{ public function valid(){ //valid signature , option $echoStr = $_GET["echostr"]; if($this->checkSignature()){ //调用验证字段 echo $echoStr; exit; } } public function responseMsg(){ //get post data, May be due to the different environments $postStr = $GLOBALS["HTTP_RAW_POST_DATA"]; //接收微信发来的XML数据 //extract post data if(!empty($postStr)){ //解析post来的XML为一个对象$postObj $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA); $fromUsername = $postObj->FromUserName; //请求消息的用户 $toUsername = $postObj->ToUserName; //"我"的公众号id $keyword = trim($postObj->Content); //消息内容 $time = time(); //时间戳 $msgtype = 'text'; //消息类型:文本 $textTpl = "<xml> <ToUserName><![CDATA[%s]]></ToUserName> <FromUserName><![CDATA[%s]]></FromUserName> <CreateTime>%s</CreateTime> <MsgType><![CDATA[%s]]></MsgType> <Content><![CDATA[%s]]></Content> </xml>"; if($keyword == 'hehe'){ $contentStr = 'hello world!!!'; $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgtype, $contentStr); echo $resultStr; exit(); }else{ $contentStr = '输入hehe试试'; $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgtype, $contentStr); echo $resultStr; exit(); } }else { echo ""; exit; } } //验证字段 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; } } }
If you send a message, the system prompts: This public platform is temporarily unavailable, please try again later. Then there is probably a problem with the code syntax. Check for syntax errors and try again.
Attachment:
When a new user follows your official account, automatically return information: (Add this code before judging $keyword).
if($postObj->MsgType == 'event'){ //如果XML信息里消息类型为event if($postObj->Event == 'subscribe'){ //如果是订阅事件 $contentStr = "欢迎订阅misaka去年夏天!\n更多精彩内容:http://blog.csdn.net/misakaqunianxiatian"; $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgtype, $contentStr); echo $resultStr; exit(); } }
The above is the entire content of this article. I hope it will be helpful to everyone’s study. I also hope that everyone will support Script House.

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

PHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.

PHP is not dead. 1) The PHP community actively solves performance and security issues, and PHP7.x improves performance. 2) PHP is suitable for modern web development and is widely used in large websites. 3) PHP is easy to learn and the server performs well, but the type system is not as strict as static languages. 4) PHP is still important in the fields of content management and e-commerce, and the ecosystem continues to evolve. 5) Optimize performance through OPcache and APC, and use OOP and design patterns to improve code quality.

PHP and Python have their own advantages and disadvantages, and the choice depends on the project requirements. 1) PHP is suitable for web development, easy to learn, rich community resources, but the syntax is not modern enough, and performance and security need to be paid attention to. 2) Python is suitable for data science and machine learning, with concise syntax and easy to learn, but there are bottlenecks in execution speed and memory management.

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.


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