What code can php contain?

PHP (full name: PHP: Hypertext Preprocessor, that is, "PHP: Hypertext Preprocessor") is a general open source scripting language. PHP scripts are executed on the server. PHP is free to download and use. (Recommended learning: PHP video tutorial)

PHP is simple and easy to learn for beginners.

PHP also provides many advanced features for professional programmers.​

What is a PHP file?

PHP files can contain text, HTML, JavaScript code and PHP code

PHP code is executed on the server, and the result is returned to the browser in the form of pure HTML

The default file extension for PHP files is ".php"

What can PHP do?

PHP can generate dynamic page content

PHP can create, open, read, write, and close files on the server

PHP can collect form data

PHP can send and receive cookies

PHP can add, delete, and modify data in your database

PHP can restrict users from accessing some pages on your website

PHP can encrypt data

With PHP, you are no longer limited to outputting HTML. You can export images, PDF files, and even Flash movies. You can also output arbitrary text, such as XHTML and XML.

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