PHP在浏览器上跟踪调试的方法以及使用ChromePhp的简单介绍
之前用ThinkPHP时发现有个 trace 函数可以跟踪调试,感觉很有意思,网上搜索了下类似的东西,发现了 ChromePhp ,以前没想过这样来调试 PHP 程序,感觉非常方便,很有用。
ThinkPHP 使用的是自己生成的 HTML 随模版一起输出来显示,偶尔会遇到一些莫名其妙的问题,效果不是太好,
还有一些也是类似的方法,但输出的主要是在模版中增加 JS 代码,调用浏览器的调试方法进行输出调试
如 console.log('PHP的一些调试输出内容');
ChromePhp 是通过header来传输调试内容并通过安装 Chrome 浏览器的插件读取header 信息显示到浏览器调试面板中进行查看,功能比较强大,对页面没什么太多干扰,调试也更方便,火狐下据说也有类似的 firePhp ,不过现在不怎么用火狐浏览器也没去测试过
官网地址:
http://www.chromelogger.com/
这是该开源项目的 Github 地址:
Github : https://github.com/ccampbell/chromephp
这是 Chrome 内核浏览器插件的安装地址:
https://chrome.google.com/extensions/detail/noaneddfkdjfnfdakjjmocngnfkfehhd
不过老是被墙,不容打开,而且只能是 google chrome 才能安装,我找了老半天只找到个 3.0 的插件
插件下载地址:
http://download.csdn.net/detail/zsjangel/7535201
可以安装后试试 升级到现在最新的 4.1,我是这样成功了的
3.0 的插件图标和 4.1 的不一样的:
下面是4.1版本,黑色表示为开启插件,点击启动
下方显示蓝色时表示启动,可以在面板中看到调试信息
PHP下的使用方法:
ChromePhp::log('Hello console!');ChromePhp::group('this is group');ChromePhp::log('Hi 神神的蜗牛!');ChromePhp::error('something went wrong!');ChromePhp::groupEnd();ChromePhp::table(array(array('aa'=>'bb', 'cc'=>11), array('aa'=>'cc', 'cc'=>22)));
group 表示下面的所有都是一组调试信息,一直到 groupEnd 结束,显示效果和普通的 log 是不一样的
table 的参数必须是 二维数组,否则将不显示,数组的键名及字段名
下面是效果图:

Effective methods to prevent session fixed attacks include: 1. Regenerate the session ID after the user logs in; 2. Use a secure session ID generation algorithm; 3. Implement the session timeout mechanism; 4. Encrypt session data using HTTPS. These measures can ensure that the application is indestructible when facing session fixed attacks.

Implementing session-free authentication can be achieved by using JSONWebTokens (JWT), a token-based authentication system where all necessary information is stored in the token without server-side session storage. 1) Use JWT to generate and verify tokens, 2) Ensure that HTTPS is used to prevent tokens from being intercepted, 3) Securely store tokens on the client side, 4) Verify tokens on the server side to prevent tampering, 5) Implement token revocation mechanisms, such as using short-term access tokens and long-term refresh tokens.

The security risks of PHP sessions mainly include session hijacking, session fixation, session prediction and session poisoning. 1. Session hijacking can be prevented by using HTTPS and protecting cookies. 2. Session fixation can be avoided by regenerating the session ID before the user logs in. 3. Session prediction needs to ensure the randomness and unpredictability of session IDs. 4. Session poisoning can be prevented by verifying and filtering session data.

To destroy a PHP session, you need to start the session first, then clear the data and destroy the session file. 1. Use session_start() to start the session. 2. Use session_unset() to clear the session data. 3. Finally, use session_destroy() to destroy the session file to ensure data security and resource release.

How to change the default session saving path of PHP? It can be achieved through the following steps: use session_save_path('/var/www/sessions');session_start(); in PHP scripts to set the session saving path. Set session.save_path="/var/www/sessions" in the php.ini file to change the session saving path globally. Use Memcached or Redis to store session data, such as ini_set('session.save_handler','memcached'); ini_set(

TomodifydatainaPHPsession,startthesessionwithsession_start(),thenuse$_SESSIONtoset,modify,orremovevariables.1)Startthesession.2)Setormodifysessionvariablesusing$_SESSION.3)Removevariableswithunset().4)Clearallvariableswithsession_unset().5)Destroythe

Arrays can be stored in PHP sessions. 1. Start the session and use session_start(). 2. Create an array and store it in $_SESSION. 3. Retrieve the array through $_SESSION. 4. Optimize session data to improve performance.

PHP session garbage collection is triggered through a probability mechanism to clean up expired session data. 1) Set the trigger probability and session life cycle in the configuration file; 2) You can use cron tasks to optimize high-load applications; 3) You need to balance the garbage collection frequency and performance to avoid data loss.


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