How to solve PHP request interface timeout
[HTTP access]
Generally we access HTTP in many ways, mainly: curl, socket, file_get_contents() and other methods.
If the other party's server never responds, we will be in tragedy. It is easy to kill the entire server, so we also need to consider the timeout issue when accessing http.
[CURL access HTTP]
CURL is a commonly used and reliable lib library for accessing the HTTP protocol interface. It has high performance and some concurrency support. functions, etc.
CURL:
curl_setopt($ch, opt) can set some timeout settings, mainly including:
CURLOPT_TIMEOUT Set the maximum number of seconds cURL is allowed to execute.
CURLOPT_TIMEOUT_MS Sets the maximum number of milliseconds cURL is allowed to execute. (Added in cURL 7.16.2. Available from PHP 5.2.3.)
CURLOPT_CONNECTTIMEOUT The time to wait before initiating a connection. If set to 0, it will wait indefinitely.
CURLOPT_CONNECTTIMEOUT_MS The time to wait for a connection attempt, in milliseconds. If set to 0, wait infinitely. Added in cURL 7.16.2. Available starting with PHP 5.2.3.
CURLOPT_DNS_CACHE_TIMEOUT Set the time to save DNS information in memory, the default is 120 seconds.
curl ordinary second-level timeout:
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 60); //You only need to set the number of seconds
curl_setopt($ ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_USERAGENT, $defined_vars['HTTP_USER_AGENT']);
curl ordinary second-level timeout usage:
curl_setopt($ch, CURLOPT_TIMEOUT, 60);
If curl requires millisecond timeout, you need to add:
curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1L );
Or:
curl_setopt ($ch, CURLOPT_NOSIGNAL, true); can support millisecond level timeout settings
An example of a millisecond timeout for curl:
<?php
if (!isset($_GET['foo'])) {
// Client
$ch = curl_init('http://example.com/');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_NOSIGNAL, 1);
//注意，毫秒超时一定要设置这个
curl_setopt($ch, CURLOPT_TIMEOUT_MS, 200);
//超时毫秒，cURL 7.16.2中被加入。从PHP 5.2.3起可使用
$data = curl_exec($ch);
$curl_errno = curl_errno($ch);
$curl_error = curl_error($ch);
curl_close($ch);
if ($curl_errno > 0) {
echo "cURL Error ($curl_errno): $curl_error\n";
} else {
echo "Data received: $data\n";
}
} else {
// Server
sleep(10);
echo "Done.";
}
?>Some other tips:
1. According to experience, the summary is: cURL version >= libcurl/7.21. In version 0, the millisecond timeout will definitely take effect, remember.
2. There is also a problem with the millisecond timeout of curl_multi. . A single access supports ms-level timeout, but curl_multi will be inaccurate if multiple calls are made in parallel.
[Accessing HTTP via stream processing]
In addition to curl, we often also Use fsockopen or file operation function to process the HTTP protocol, so our timeout processing for this is also necessary.
Recommended tutorial: PHP video tutorial
The above is the detailed content of How to solve PHP request interface 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
AI Hentai Generator
Generate AI Hentai for free.
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
1381
52
PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian
Dec 24, 2024 pm 04:42 PM
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
How To Set Up Visual Studio Code (VS Code) for PHP Development
Dec 20, 2024 am 11:31 AM
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
7 PHP Functions I Regret I Didn't Know Before
Nov 13, 2024 am 09:42 AM
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
How do you parse and process HTML/XML in PHP?
Feb 07, 2025 am 11:57 AM
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
Explain JSON Web Tokens (JWT) and their use case in PHP APIs.
Apr 05, 2025 am 12:04 AM
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,
PHP Program to Count Vowels in a String
Feb 07, 2025 pm 12:12 PM
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
Explain late static binding in PHP (static::).
Apr 03, 2025 am 12:04 AM
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 PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases?
Apr 03, 2025 am 12:03 AM
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.
