Table of Contents
回复讨论(解决方案)
Home Backend Development PHP Tutorial PHP 的并行如何实现?

PHP 的并行如何实现?

Jun 23, 2016 pm 02:01 PM

要实现一个广播功能,广播的表里有内容,开始时间,结束时间,间隔时间。
如图:


我用do while 做定时处理,代码如下:

do{			$ti = strtotime(date('Y-m-d H:i:s'));//当前时间戳						$array  = $this->all_broadcast();//广播数组						foreach($array as $key => $val){				$intervals = 60;//(秒)间隔时间				$content = urlencode($val['content']);//广播内容									if($ti >= $val['starttime'] && $ti <= $val['endtime']){//判断当前时间是否大于等于开始时间并且小于等于结束时间										$hello = $this->get_curl($content);//调用广播的方法开始广播					sleep($intervals);//间隔时间调用一次				}								fclose($fp);			}					sleep(10);//10秒		}while(true);
Copy after login


现在的问题是:如果广播是一条的话,可以根据间隔时间来按时广播。如果广播有好几条,那他就不能在同一时间调用get_curl方法N次。这要怎么解决呢?
怎样能让他们根据各自的开始时间、结束时间、间隔时间,互不干扰地进行播放呢?
这是不是需要PHP中的并行来实现呢?


回复讨论(解决方案)

这个问题貌似涉及到了多线程,如果在java中可以做到,弄多个线程让它跑就是了。
php不支持多线程。但是可以用一个苯点的办法实现你要的需求就是:定时任务;
linux下可以用crontab来实现。

试试 curl_multi 吧

这个问题貌似涉及到了多线程,如果在java中可以做到,弄多个线程让它跑就是了。
php不支持多线程。但是可以用一个苯点的办法实现你要的需求就是:定时任务;
linux下可以用crontab来实现。 不是linux的系统,win下怎么实现呢?能点建议吧!

1086 和 1087 的开始时间相同
你打算混合输出这两条内容?


这个问题貌似涉及到了多线程,如果在java中可以做到,弄多个线程让它跑就是了。
php不支持多线程。但是可以用一个苯点的办法实现你要的需求就是:定时任务;
linux下可以用crontab来实现。 不是linux的系统,win下怎么实现呢?能点建议吧!

windows装一个crontab工具

1086 和 1087 的开始时间相同
你打算混合输出这两条内容?
是的。他们互不干扰地输入各种预先设定好的!

不知道什么意思,

sleep(10);//10秒
这个不会在网页上显示内容 啊只有10 过后才会显示,一次性显示,
你的好像是死循环吧

我也是新人

并行未必需要用多线程~ 而且php的多线程库在cgi下鬼知道会发生什么情况,绝对要好好测试下,有兴趣的同学试试。
回到正题,楼主可能需要的是异步~
比如程序运行到某一刻发一条通知到某个处理单元(实现方式先不论),然后也不等待这个处理单元的处理结果就直接向下执行,这样就能省下时间~
关于这个,鸟哥讨论过几种实现方式~
http://www.laruence.com/2008/04/14/318.html
另,其中用curl的办法有点小变化,我在评论里加了一笔。

翻了一下文档~ 发现curl 有了毫秒级的超时设置~CURLOPT_CONNECTTIMEOUT_MS 这个选项备注: Added in cURL 7.16.2. Available since PHP 5.2.3我现在用的cURL 7.24 和 php5.4 ~ 暗爽~
Copy after login
Copy after login


当然,时隔这么久,也许有其它更好的办法~ http://www.swoole.com/ 就是一例,私以为这个堪成大器,phper可以不用再跪着写代码了~

好吧,有点不太习惯CSDN自带的文字编辑~ 凑合看吧~

并行未必需要用多线程~ 而且php的多线程库在cgi下鬼知道会发生什么情况,绝对要好好测试下,有兴趣的同学试试。
回到正题,楼主可能需要的是异步~
比如程序运行到某一刻发一条通知到某个处理单元(实现方式先不论),然后也不等待这个处理单元的处理结果就直接向下执行,这样就能省下时间~
关于这个,鸟哥讨论过几种实现方式~
http://www.laruence.com/2008/04/14/318.html
另,其中用curl的办法有点小变化,我在评论里加了一笔。

翻了一下文档~ 发现curl 有了毫秒级的超时设置~CURLOPT_CONNECTTIMEOUT_MS 这个选项备注: Added in cURL 7.16.2. Available since PHP 5.2.3我现在用的cURL 7.24 和 php5.4 ~ 暗爽~
Copy after login
Copy after login


当然,时隔这么久,也许有其它更好的办法~ http://www.swoole.com/ 就是一例,私以为这个堪成大器,phper可以不用再跪着写代码了~

哎!我也看过这个swoole,可看那代码,不像是PHP的啊?而且我复制到代码里都报错。不会用啊这是!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1663
14
PHP Tutorial
1266
29
C# Tutorial
1239
24
Explain different error types in PHP (Notice, Warning, Fatal Error, Parse Error). Explain different error types in PHP (Notice, Warning, Fatal Error, Parse Error). Apr 08, 2025 am 12:03 AM

There are four main error types in PHP: 1.Notice: the slightest, will not interrupt the program, such as accessing undefined variables; 2. Warning: serious than Notice, will not terminate the program, such as containing no files; 3. FatalError: the most serious, will terminate the program, such as calling no function; 4. ParseError: syntax error, will prevent the program from being executed, such as forgetting to add the end tag.

PHP and Python: Comparing Two Popular Programming Languages PHP and Python: Comparing Two Popular Programming Languages Apr 14, 2025 am 12:13 AM

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

Explain secure password hashing in PHP (e.g., password_hash, password_verify). Why not use MD5 or SHA1? Explain secure password hashing in PHP (e.g., password_hash, password_verify). Why not use MD5 or SHA1? Apr 17, 2025 am 12:06 AM

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 in Action: Real-World Examples and Applications PHP in Action: Real-World Examples and Applications Apr 14, 2025 am 12:19 AM

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

What are HTTP request methods (GET, POST, PUT, DELETE, etc.) and when should each be used? What are HTTP request methods (GET, POST, PUT, DELETE, etc.) and when should each be used? Apr 09, 2025 am 12:09 AM

HTTP request methods include GET, POST, PUT and DELETE, which are used to obtain, submit, update and delete resources respectively. 1. The GET method is used to obtain resources and is suitable for read operations. 2. The POST method is used to submit data and is often used to create new resources. 3. The PUT method is used to update resources and is suitable for complete updates. 4. The DELETE method is used to delete resources and is suitable for deletion operations.

PHP: A Key Language for Web Development PHP: A Key Language for Web Development Apr 13, 2025 am 12:08 AM

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

Explain the difference between self::, parent::, and static:: in PHP OOP. Explain the difference between self::, parent::, and static:: in PHP OOP. Apr 09, 2025 am 12:04 AM

In PHPOOP, self:: refers to the current class, parent:: refers to the parent class, static:: is used for late static binding. 1.self:: is used for static method and constant calls, but does not support late static binding. 2.parent:: is used for subclasses to call parent class methods, and private methods cannot be accessed. 3.static:: supports late static binding, suitable for inheritance and polymorphism, but may affect the readability of the code.

How does PHP handle file uploads securely? How does PHP handle file uploads securely? Apr 10, 2025 am 09:37 AM

PHP handles file uploads through the $\_FILES variable. The methods to ensure security include: 1. Check upload errors, 2. Verify file type and size, 3. Prevent file overwriting, 4. Move files to a permanent storage location.

See all articles