Solution to PHP request remote address setting timeout
This article mainly introduces the solution to setting the timeout for PHP requesting remote addresses. Interested friends can refer to it. I hope it will be helpful to everyone.
php requests a remote address to set the timeout. It mainly explains how to set the timeout for three simple common functions: file_get_contents, fopen, and curl. Generally, it is recommended to use curl, which has the best performance and the highest efficiency.
1. file_get_contents request timeout setting
$timeout = array( 'http'=> array( 'timeout'=>5//设置一个超时时间,单位为秒 ) ); $ctx = stream_context_create($timeout); $text = file_get_contents("http://www.jb51.net/",0, $ctx);
2. fopen request timeout setting
$timeout = array( 'http' => array( 'timeout' => 5 //设置一个超时时间,单位为秒 ) ); $ctx = stream_context_create($timeout); if ($fp = fopen("http://www.jb51.net/", "r", false, $ctx)) { while( $c = fread($fp, 8192)) { echo $c; } fclose($fp); }
3. curl request timeout Setting
CURL is a commonly used lib library for accessing the HTTP protocol interface. It has high performance and has some concurrency support functions.
curl_setopt($ch, opt) You can set some timeout settings, mainly including:
a, CURLOPT_TIMEOUT sets the maximum number of seconds that cURL is allowed to execute.
b. CURLOPT_TIMEOUT_MS sets the maximum number of milliseconds that cURL is allowed to execute.
c. CURLOPT_CONNECTTIMEOUT The time to wait before initiating a connection. If set to 0, it will wait indefinitely.
d. CURLOPT_CONNECTTIMEOUT_MS The time to wait for a connection attempt, in milliseconds. If set to 0, wait infinitely. e. CURLOPT_DNS_CACHE_TIMEOUT sets the time to save DNS information in memory, the default is 120 seconds.
$ch = curl_init(); curl_setopt($ch, CURLOPT_URL,$url); curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); curl_setopt($ch, CURLOPT_TIMEOUT,60); //只需要设置一个秒的数量就可以 curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); curl_setopt($ch, CURLOPT_USERAGENT, $defined_vars['HTTP_USER_AGENT']);
The above is the entire content of this article, I hope it will be helpful to everyone's study.
Related recommendations:
How to implement the hexadecimal color random generator function in PHP
PHP Practical Tutorial: Filtering, Verification, Escape and Password Methods
phpAchieve DES encryption and decryption consistent with c# method
The above is the detailed content of Solution to PHP request remote address setting timeout. For more information, please follow other related articles on the PHP Chinese website!

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

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

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

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

Hot Topics

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.
