How to use php to obtain the source code of a web page?

1. Use file_get_contents to obtain the source code of the web page. This method is the most commonly used and requires only two lines of code. It is very simple and convenient.

2. Use fopen to obtain the source code of the web page. There are many people using this method, but the code is a bit too much.

3. Use curl to obtain the source code of the web page. The method of using curl to obtain the source code of a web page is often used by people with higher requirements. For example, when you need to obtain the web page header information while crawling the web page content, there is also the use of ENCODING encoding, the use of USERAGENT, etc. The so-called web page code refers to some special "languages" that need to be used in the process of web page production. Designers organize and arrange these "languages" to create web pages, and then the browser processes the code. After "translation\" is the final effect we see. Codes commonly used when making web pages include HTML, JavaScript, ASP, PHP, CGI, etc. Among them, Hypertext Markup Language (an application under Standard Universal Markup Language, foreign language abbreviation: HTML) is the most basic web page code.