php怎么指定大小的采集页面，比如说只要hearder部分
php如何指定大小的采集页面，比如说只要hearder部分
如题：file_get_contents不能用，不太稳定。有没有其它方法？
------解决方案--------------------
- PHP code
$curl = curl_init();curl_setopt($curl, CURLOPT_URL, $url);curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);curl_setopt($curl, CURLOPT_WRITEFUNCTION, 'func');//设置一个回调函数$text = curl_exec($curl);curl_close($curl);echo $text;function func($ch, $str) { if(strstr($str, '你需要识别的串') return 0;//判断是否取到需要的内容 return strlen($str);}<div class="clear">
</div>
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
1377
52
How to realize the mutual conversion between CURL and python requests in python
May 03, 2023 pm 12:49 PM
Both curl and Pythonrequests are powerful tools for sending HTTP requests. While curl is a command-line tool that allows you to send requests directly from the terminal, Python's requests library provides a more programmatic way to send requests from Python code. The basic syntax for converting curl to Pythonrequestscurl command is as follows: curl[OPTIONS]URL When converting curl command to Python request, we need to convert the options and URL into Python code. Here is an example curlPOST command: curl-XPOST https://example.com/api
Tutorial on updating curl version under Linux!
Mar 07, 2024 am 08:30 AM
To update the curl version under Linux, you can follow the steps below: Check the current curl version: First, you need to determine the curl version installed in the current system. Open a terminal and execute the following command: curl --version This command will display the current curl version information. Confirm available curl version: Before updating curl, you need to confirm the latest version available. You can visit curl's official website (curl.haxx.se) or related software sources to find the latest version of curl. Download the curl source code: Using curl or a browser, download the source code file for the curl version of your choice (usually .tar.gz or .tar.bz2
PHP8.1 released: Introducing curl for concurrent processing of multiple requests
Jul 08, 2023 pm 09:13 PM
PHP8.1 released: Introducing curl for concurrent processing of multiple requests. Recently, PHP officially released the latest version of PHP8.1, which introduced an important feature: curl for concurrent processing of multiple requests. This new feature provides developers with a more efficient and flexible way to handle multiple HTTP requests, greatly improving performance and user experience. In previous versions, handling multiple requests often required creating multiple curl resources and using loops to send and receive data respectively. Although this method can achieve the purpose
From start to finish: How to use php extension cURL to make HTTP requests
Jul 29, 2023 pm 05:07 PM
From start to finish: How to use php extension cURL for HTTP requests Introduction: In web development, it is often necessary to communicate with third-party APIs or other remote servers. Using cURL to make HTTP requests is a common and powerful way. This article will introduce how to use PHP to extend cURL to perform HTTP requests, and provide some practical code examples. 1. Preparation First, make sure that php has the cURL extension installed. You can execute php-m|grepcurl on the command line to check
Detailed explanation of the usage of return in C language
Oct 07, 2023 am 10:58 AM
The usage of return in C language is: 1. For functions whose return value type is void, you can use the return statement to end the execution of the function early; 2. For functions whose return value type is not void, the function of the return statement is to end the execution of the function. The result is returned to the caller; 3. End the execution of the function early. Inside the function, we can use the return statement to end the execution of the function early, even if the function does not return a value.
How to handle 301 redirection of web pages in PHP Curl?
Mar 08, 2024 am 11:36 AM
How to handle 301 redirection of web pages in PHPCurl? When using PHPCurl to send network requests, you will often encounter a 301 status code returned by the web page, indicating that the page has been permanently redirected. In order to handle this situation correctly, we need to add some specific options and processing logic to the Curl request. The following will introduce in detail how to handle 301 redirection of web pages in PHPCurl, and provide specific code examples. 301 redirect processing principle 301 redirect means that the server returns a 30
What is the execution order of return and finally statements in Java?
Apr 25, 2023 pm 07:55 PM
Source code: publicclassReturnFinallyDemo{publicstaticvoidmain(String[]args){System.out.println(case1());}publicstaticintcase1(){intx;try{x=1;returnx;}finally{x=3;}}}#Output The output of the above code can simply conclude: return is executed before finally. Let's take a look at what happens at the bytecode level. The following intercepts part of the bytecode of the case1 method, and compares the source code to annotate the meaning of each instruction in
what is linux curl
Apr 20, 2023 pm 05:05 PM
In Linux, curl is a very practical tool for transferring data to and from the server. It is a file transfer tool that uses URL rules to work under the command line; it supports file upload and download, and is a comprehensive transfer tool. . Curl provides a lot of very useful functions, including proxy access, user authentication, ftp upload and download, HTTP POST, SSL connection, cookie support, breakpoint resume and so on.
