PHP 向某个文件一直写数据
如题,本人最近想写个php,就是一直向某个文件写数据,直到把磁盘写满为止
要求就是如何让php代码自己去之行,不需要外界给起动作
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如果你的数据量本身不是很大的话,现在的硬盘都很大,确实不容易啊
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你要攻击服务器么?写文件很慢的,不如直接生成大文件,执行复制文件。。。
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PHP也可以转换成执行文件,但总不如C或汇编那样直接吧,写文件是很糟糕的,尤其是用很短的数据不断去写,直接让系统卡那了,没等写满就被重启了(现在的大硬盘,用那种方法写满一半也要很久的)。直接操作FAT32/NTFS生成大文件是很快的,至少用大内存缓冲数据写的话也不仅更快而且还可以让系统能响应一些操作,不至于假死。
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在死循环中以追加方式写就是了
但第一次推动总是需要的。上帝太忙了,没空替你推
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php 会超时
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对,不能只考虑执行方法,PHP有运行时间限制。
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ignore_user_abort();
set_time_limit(0);
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启动还是需要手工啊,脚本不能自运行的!
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"直到把磁盘写满为止"
很好奇楼主的意图
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PHP定时执行任可以解决你的问提

To protect the application from session-related XSS attacks, the following measures are required: 1. Set the HttpOnly and Secure flags to protect the session cookies. 2. Export codes for all user inputs. 3. Implement content security policy (CSP) to limit script sources. Through these policies, session-related XSS attacks can be effectively protected and user data can be ensured.

Methods to optimize PHP session performance include: 1. Delay session start, 2. Use database to store sessions, 3. Compress session data, 4. Manage session life cycle, and 5. Implement session sharing. These strategies can significantly improve the efficiency of applications in high concurrency environments.

Thesession.gc_maxlifetimesettinginPHPdeterminesthelifespanofsessiondata,setinseconds.1)It'sconfiguredinphp.iniorviaini_set().2)Abalanceisneededtoavoidperformanceissuesandunexpectedlogouts.3)PHP'sgarbagecollectionisprobabilistic,influencedbygc_probabi

In PHP, you can use the session_name() function to configure the session name. The specific steps are as follows: 1. Use the session_name() function to set the session name, such as session_name("my_session"). 2. After setting the session name, call session_start() to start the session. Configuring session names can avoid session data conflicts between multiple applications and enhance security, but pay attention to the uniqueness, security, length and setting timing of session names.

The session ID should be regenerated regularly at login, before sensitive operations, and every 30 minutes. 1. Regenerate the session ID when logging in to prevent session fixed attacks. 2. Regenerate before sensitive operations to improve safety. 3. Regular regeneration reduces long-term utilization risks, but the user experience needs to be weighed.

Setting session cookie parameters in PHP can be achieved through the session_set_cookie_params() function. 1) Use this function to set parameters, such as expiration time, path, domain name, security flag, etc.; 2) Call session_start() to make the parameters take effect; 3) Dynamically adjust parameters according to needs, such as user login status; 4) Pay attention to setting secure and httponly flags to improve security.

The main purpose of using sessions in PHP is to maintain the status of the user between different pages. 1) The session is started through the session_start() function, creating a unique session ID and storing it in the user cookie. 2) Session data is saved on the server, allowing data to be passed between different requests, such as login status and shopping cart content.

How to share a session between subdomains? Implemented by setting session cookies for common domain names. 1. Set the domain of the session cookie to .example.com on the server side. 2. Choose the appropriate session storage method, such as memory, database or distributed cache. 3. Pass the session ID through cookies, and the server retrieves and updates the session data based on the ID.


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