我现在搞了个采集的php代码,把网页的数据采集下来保存在桌面,现在测试的时候发现一个问题,在浏览器关闭的情况下,php还在继续执行生成数据,问题来了:如何在关闭浏览器或者点击浏览器上url输入后面的停止按钮使得php代码不再继续执行?
回复讨论(解决方案)
php默认是关闭就停止执行了啊,你用ajax请求php吗?
回复楼上的没有用ajax
直接关闭浏览器就停止了,当前的PHP操作了。
建议从几个角度去查问题:
1.浏览器的进程是否结束
2.Linux的情况,使用不同WEB服务时,配置是否正确,是否存在配置导致浏览器关闭,但是WEB服务的当前进程仍然在执行。
伪进程?
很多人想搞还搞不来呢!
你需要在你的代码中设施并处理可以触及到的终止信号
最近我也发现了这个问题, 浏览器关闭, 程序是会执行的。
但是应该是执行完当前的内容后, 就会停止。
如果你是本地测试, 我一般都直接重启服务。
你要做采集, 建议还是用bin方式来做。
最近我也发现了这个问题, 浏览器关闭, 程序是会执行的。
但是应该是执行完当前的内容后, 就会停止。
如果你是本地测试, 我一般都直接重启服务。
你要做采集, 建议还是用bin方式来做。
bin方式指的是?求指点
set_time_limit();
设置脚本最多执行的时间,是最简单的方法。
呵呵,你虽然关了浏览器,但是程序的指令早就已经发出去了,再他未完成所有的指令之前,假如没有给停止命令(是的是跟底层,服务器有关的指令,不是指管浏览器),之前的未完成的指令会继续执行,知道指令完成或者被迫停止(比如重启服务器,或者重启web服务程序)
加个exit()试试看
嗯,我的采集也出现了这个问题,关闭了浏览器,还一直在下。我的猜想是跟php curl的工作机制有关,具体原因不清楚。
起初我注销电脑都不行,一定是重启。
可能因为是http协议,最后我在进程里关闭浏览器的进程就可以了;另外我觉得可以关闭apache服务应该也可以,没试过。
程序设置了最大执行时间很长,程序里面用了sleep主要防止采集的太快封ip,不知道和这个有没关系。
程序设置了最大执行时间很长,程序里面用了sleep主要防止采集的太快封ip,不知道和这个有没关系。 目测和这个没有关系,php curl是可以支持代理的。
跟这个没关系,但跟你的程序写法有关系,由于并没有看到你的程序,所以也不能明确的说
一般的说:
当关闭浏览器,程序会终止(php 还专门设有函数来改变这个行为),是有条件的
这个条件就是程序必须有输出
php 只在有输出时才去检查到用户的连接是否断开
先在任务管理器确认浏览器进程是否关闭了再谈更高深的问题吧
我关浏览器通常都要等几分钟进程才结束,机器年代久远……
还是没找到解决办法,只有重启apache才能终止。
就是php的命令行方式, 而且最好是在Linux下面使用, 稳定。

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.

In PHP, use the clone keyword to create a copy of the object and customize the cloning behavior through the \_\_clone magic method. 1. Use the clone keyword to make a shallow copy, cloning the object's properties but not the object's properties. 2. The \_\_clone method can deeply copy nested objects to avoid shallow copying problems. 3. Pay attention to avoid circular references and performance problems in cloning, and optimize cloning operations to improve efficiency.

PHP is suitable for web development and content management systems, and Python is suitable for data science, machine learning and automation scripts. 1.PHP performs well in building fast and scalable websites and applications and is commonly used in CMS such as WordPress. 2. Python has performed outstandingly in the fields of data science and machine learning, with rich libraries such as NumPy and TensorFlow.

Key players in HTTP cache headers include Cache-Control, ETag, and Last-Modified. 1.Cache-Control is used to control caching policies. Example: Cache-Control:max-age=3600,public. 2. ETag verifies resource changes through unique identifiers, example: ETag: "686897696a7c876b7e". 3.Last-Modified indicates the resource's last modification time, example: Last-Modified:Wed,21Oct201507:28:00GMT.

In PHP, password_hash and password_verify functions should be used to implement secure password hashing, and MD5 or SHA1 should not be used. 1) password_hash generates a hash containing salt values to enhance security. 2) Password_verify verify password and ensure security by comparing hash values. 3) MD5 and SHA1 are vulnerable and lack salt values, and are not suitable for modern password security.

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.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

SublimeText3 Linux new version
SublimeText3 Linux latest version

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.