What are the ways for php to obtain the source content of web pages?

1. Use file_get_contents to get the source code of the webpage. This method is the most commonly used, only two lines of code are needed, which is very simple and convenient.

2. Use fopen to get the source code of the webpage. This method is also used by many people, but the code is a bit too much.

3. Use curl to get the source code of the web page. Using curl to get the source code of web pages is often used by people who need higher requirements. For example, when you need to grab the content of a web page, you need to get the header information of the web page, as well as the coding and the use of USERAGENT.

The so-called web page code refers to some special "languages" that need to be used in the process of making web pages. The designer arranges these "language" organizations to make a web page, and then the browser "translates" the code, which is the final effect we see.

The commonly used codes for making web pages are HTML, JavaScript, ASP, PHP, CGI, etc. Hypertext Markup Language (HTML) is the most basic web page code.