What can PHP be used for?

The functions that PHP can be used for include: 1. PHP can perform all types of calculations; 2. PHP also allows users to interact directly with scripts; 3. PHP can interact with MySQL databases; 4. It can be used GD library bundled with PHP to dynamically create simple graphics or edit existing graphics and more.

The operating environment of this article: Windows 7 system, Dell G3 computer, PHP version 7.1.

PHP is a popular server-side scripting language. It is used on the Internet and mentioned in many web tutorials and programming guides.

Generally speaking, PHP is used to add functionality to a website that HTML alone cannot achieve, but what does this really mean? Why is PHP used so frequently? What are the benefits of using PHP?

PHP performs calculations

PHP can perform all types of calculations, from figuring out what day of the week it is or what day of the week March 18, 2046 is, to performing all types of mathematical equations.

In PHP, mathematical expressions consist of operators and operands. Basic mathematical addition, subtraction, multiplication and division are done using mathematical operators.

A large number of mathematical functions are part of the core of PHP. No installation is required to use them.

PHP collects user information

PHP also allows users to interact directly with scripts.

This can be something very simple, like collecting temperature values ​​that the user wants to convert from degrees to another format. Or, it can be more extensive, like adding their information to an address book, asking them to post on a forum, or take part in a survey.

PHP interacts with MySQL database

PHP is particularly good at interacting with MySQL database, which brings unlimited possibilities.

You can write user-submitted information to the database or retrieve information from the database. This allows you to dynamically create pages using the contents of the database.

You can even perform complex tasks like setting up a login system, creating a website search function or saving your store's product catalog and inventory online. You can also use PHP and MySQL to set up an automated image gallery to showcase your products.

Create graphics with PHP and GD library

Use the GD library bundled with PHP to dynamically create simple graphics or edit existing graphics.

You may want to resize the images, rotate them, change them to grayscale, or make thumbnails of them. Actual applications allow users to edit their avatar or generate CAPTCHA verification. You can also create dynamic graphics that are always changing, such as dynamic Twitter signatures.

PHP supports cookies

Cookies are used to identify the user and store the user's preferences as given on the site so that the user does not have to Re-enter the information. A cookie is a small file that is embedded on the user's computer.

PHP allows you to create, modify and delete cookies as well as retrieve cookie values.

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