本机配置:
apache:2.2-x86
php:5.4 ts-x86
系统:windows 64
pthreads 配置
下载地址:http://windows.php.net/downloads/pecl/releases/pthreads/2.0.9/
pthreads 5.4 下两个文件:
php_pthreas.dll 和 pthreadVC2.dll
php_pthreas.dll 放入php ext文件中
pthreadVC2.dll 放入php 根目录
php.ini
extension=php_pthreads.dll
apache http.conf 配置
LoadFile "D:/wamp/php/pthreadVC2.dll"
然后重启apache 无法启动 cmd 进入apache/bin 命令 httpd -k start 报 cannot load pthreadVC2.dll
疑问:
是否是php版本要64位 apache 才能调用 pthreadVC2.dll?
测试代码:
<code><?php class AsyncOperation extends Thread { public function __construct($arg){ $this->arg = $arg; } public function run(){ if($this->arg){ printf("Hello %s\n", $this->arg); } } } $thread = new AsyncOperation("World"); if($thread->start()) $thread->join(); ?></code>
通过apache 不加载 pthreadVC2.dll ,直接能打印出 helloword
nginx:
运行测试代码 毫无结果
提问:
php pthreads 多线程扩展 nginx 如何配置?
回复内容:
本机配置:
apache:2.2-x86
php:5.4 ts-x86
系统:windows 64
pthreads 配置
下载地址:http://windows.php.net/downloads/pecl/releases/pthreads/2.0.9/
pthreads 5.4 下两个文件:
php_pthreas.dll 和 pthreadVC2.dll
php_pthreas.dll 放入php ext文件中
pthreadVC2.dll 放入php 根目录
php.ini
extension=php_pthreads.dll
apache http.conf 配置
LoadFile "D:/wamp/php/pthreadVC2.dll"
然后重启apache 无法启动 cmd 进入apache/bin 命令 httpd -k start 报 cannot load pthreadVC2.dll
疑问:
是否是php版本要64位 apache 才能调用 pthreadVC2.dll?
测试代码:
<code><?php class AsyncOperation extends Thread { public function __construct($arg){ $this->arg = $arg; } public function run(){ if($this->arg){ printf("Hello %s\n", $this->arg); } } } $thread = new AsyncOperation("World"); if($thread->start()) $thread->join(); ?></code>
通过apache 不加载 pthreadVC2.dll ,直接能打印出 helloword
nginx:
运行测试代码 毫无结果
提问:
php pthreads 多线程扩展 nginx 如何配置?
个人觉得pthreads这个扩展不适合应用在Apache/PHP-FPM这些Web服务上,因为这些服务本身就有自己的进程管理模型.在CLI下使用pthreads可能更好些.还有,需要注意的是,不要在线程里使用echo输出内容,否则会出现不可预知的错误和行为,比如乱码(garbled).尤其是在非CLI环境下,比如Apache/PHP-FPM.另外,我在Ubuntu上用Nginx+PHP-FPM跑下面的多线程程序,是能正常运行的:
<code><?php header('Content-Type: text/html; charset=utf-8'); ob_start(); function do_flush() { echo '<br />'.str_repeat(' ', 1024*4); ob_flush(); flush(); } class Request extends Thread { public $url; public $data; public function __construct($url) { $this->url = $url; } public function run() { // 线程处理一个耗时5秒的任务 for($i=0;$iurl); $response = $this->url; if ($response) { $this->data = array($response); } //echo "线程: 任务完成<br>"; } } $request = new Request('hello.html'); // 运行线程:start()方法会触发run()运行 if ($request->start()) { // 主进程处理一个耗时10秒的任务,此时线程已经工作 for($i=0;$ijoin(); echo '线程返回数据: '.$request->data[0]; ob_end_flush();</code>
加载pthreads插件必须要求php是 ZTS Enabled ( Thread Safety ) 版,请自行检查相关版本
我将环境整体换了一下 apache2.4 php 5.6 ts-x64 threads 扩展 正常添加了

Reasons for PHPSession failure include configuration errors, cookie issues, and session expiration. 1. Configuration error: Check and set the correct session.save_path. 2.Cookie problem: Make sure the cookie is set correctly. 3.Session expires: Adjust session.gc_maxlifetime value to extend session time.

Methods to debug session problems in PHP include: 1. Check whether the session is started correctly; 2. Verify the delivery of the session ID; 3. Check the storage and reading of session data; 4. Check the server configuration. By outputting session ID and data, viewing session file content, etc., you can effectively diagnose and solve session-related problems.

Multiple calls to session_start() will result in warning messages and possible data overwrites. 1) PHP will issue a warning, prompting that the session has been started. 2) It may cause unexpected overwriting of session data. 3) Use session_status() to check the session status to avoid repeated calls.

Configuring the session lifecycle in PHP can be achieved by setting session.gc_maxlifetime and session.cookie_lifetime. 1) session.gc_maxlifetime controls the survival time of server-side session data, 2) session.cookie_lifetime controls the life cycle of client cookies. When set to 0, the cookie expires when the browser is closed.

The main advantages of using database storage sessions include persistence, scalability, and security. 1. Persistence: Even if the server restarts, the session data can remain unchanged. 2. Scalability: Applicable to distributed systems, ensuring that session data is synchronized between multiple servers. 3. Security: The database provides encrypted storage to protect sensitive information.

Implementing custom session processing in PHP can be done by implementing the SessionHandlerInterface interface. The specific steps include: 1) Creating a class that implements SessionHandlerInterface, such as CustomSessionHandler; 2) Rewriting methods in the interface (such as open, close, read, write, destroy, gc) to define the life cycle and storage method of session data; 3) Register a custom session processor in a PHP script and start the session. This allows data to be stored in media such as MySQL and Redis to improve performance, security and scalability.

SessionID is a mechanism used in web applications to track user session status. 1. It is a randomly generated string used to maintain user's identity information during multiple interactions between the user and the server. 2. The server generates and sends it to the client through cookies or URL parameters to help identify and associate these requests in multiple requests of the user. 3. Generation usually uses random algorithms to ensure uniqueness and unpredictability. 4. In actual development, in-memory databases such as Redis can be used to store session data to improve performance and security.

Managing sessions in stateless environments such as APIs can be achieved by using JWT or cookies. 1. JWT is suitable for statelessness and scalability, but it is large in size when it comes to big data. 2.Cookies are more traditional and easy to implement, but they need to be configured with caution to ensure security.


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