PHP Introduction
PHP is a server-side scripting language which is used for web development. It stands for Hypertext Preprocessor. It is faster than another programming language. It supports multiple databases like MySQL, SQL, PostgreSQL and many more.
History
PHP was developed by Rasmus Lerdorf in 1995. It is used to develop a dynamic web application. The earlier name of PHP was a personal homepage.
The PHP code is usually processed by PHP interpreter as a module in the web server or as a Common Gateway Interface (CGI).
Why should we use PHP?
We should use PHP because of various reasons.
- It runs on various platforms like (Windows, Linux Mac, etc.)
- It is compatible with all servers like (Apache, IIS, etc.)
- It supports a wide range of databases.
- It is free.
- It is easy to learn.
Following are the features of PHP
There are various features of PHP that are given below.
- Performance
- Embedded
- Portability (Platform Independent)
- It is easy to use in comparison to other languages.
- It is an open Source programming language.
Hello world program in PHP
Before start PHP, let us take a simple example of a hello world!. We know that PHP is embedded in HTML.The most common tag of PHP is:<?php ….?>.
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<html> <head> <title>Hello World</title> </head> <body> <?php echo "Hello, World!";?> </body> </html> |
Output
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0 1 2 |
Hello World |
| Index | Title |
|---|---|
| Tutorial | PHP Environment Setup |
| Tutorial | PHP Example |
| Tutorial | PHP Variables |
| Tutorial | PHP $ and $$ Variables |
| Tutorial | PHP Super Global Variables |
| Tutorial | PHP Echo And Print |
| Tutorial | PHP Constant |
| Tutorial | PHP Magic Constants |
| Tutorial | PHP Data Types |
| Tutorial | PHP Operator |
| Tutorial | PHP Comment |
| Tutorial | PHP if..Else..Elseif |
| Tutorial | PHP Switch Statement |
| Tutorial | PHP For Loops |
| Tutorial | PHP Foreach Loop |
| Tutorial | PHP While Loop |
| Tutorial | PHP Do While Loop |
| Tutorial | PHP Functions |
| Tutorial | PHP Arrays |
| Tutorial | PHP Associative Arrays |
| Tutorial | PHP Multidimensional Array |
| Tutorial | PHP Array Functions |
| Tutorial | PHP String |
| Tutorial | PHP Forms |
| Tutorial | PHP Validation |
| Tutorial | PHP Date and Time |