php basics
- 1. "PHP Hypertext Preprocessor" BYNIRMAL FELIX. K……………………………………………………………………
- 2. Introduction to PHPPHP standing for Personal Home Page/Form Interpreter
- 3. HTML embedded scripting language used to create dynamic Web pages.
- 4. IN 1994, the language was designed
- 5. The goal of the language is to allow Web developers to write dynamically generated pages quickly.PHP Functions
- 6. Working with PHPTo work PHP in our system we must download the following packages.The first step is to download the packages: • Apache : http://httpd.apache.org/• PHP : http://www.php.net/• MySQL :www.mysql.com
- 7. Introduction to LAMP and WAMPThese packages are called as LAMP (Linux, Apache, My SQL, PHP) for Linux operating system.
- 8. WAMP (Windows, Apache, My SQL, PHP ) for windows operating system.
- 9. Then install and configure these packagesGetting Started with PHPIf you choose PHP as your development language, what you need to get started depends on: • Sound knowledge of HTML. • Working knowledge of JavaScript(optional) • Sound Knowledge of SQL • Access to a web server that have Apache, My SQL and PHP configured and installed on your machine.
- 10. To check weather WAMP OR XAMPP is working enter http://localhost/xampp/ in your Web browser. The page will displayed as given below:
- 11. PHP Basics PHP Syntax:<? php écho 'Hello PHP'; ?>The nomenclature <? Php?> That makes the web server passes this portion of code to your PHP module
- 12. Note also the built-in PHP "echo" that enables printing to the screen
- 13. PHP can also be "mixed" in the HTML, which is convenient but not recommended PHP OperatorsThe most common PHP operators are assignment operators
- 17. logical operators. PHP Variables A variable in PHP is always preceded by the dollar sign: $So to declare a variable we can write: $ myVar = 'value';Note that the semicolon at the end is required at the end of each statement
- 18. PHP String A string variable is used to store and manipulatea piece of text.To declare a string we can write:<?php $text_str= “Hello World!”; echo “$text_str” ; ?>
- 19. PHP Arrays By providing the values as arguments to the array() function: <?php $citylist = array("Noida", "Delhi", "Raipur", "Ambikapur", "Bhagalpur");?>
- 20. PHP Flow control and looping If-else
- 21. Switch-case
- 22. For loop
- 23. While loop
- 24. Do-while loop
- 25. Foreach loopWorking with File System & I/O Working with Files Opening a file :Syntax to open a file: $my_file=fopen(“file name”, “mode constant”); Closing a file :syntax to close a file: fclose(file_pointer);
- 26. Working with Database Creating a Connection using mysql: In PHP, mysql_connect() function is used to connect to database .Syntax of mysql_connect: $con=mysql_connect(“localhost/ip”, “user_name”, “password”);
- 27. Various PHP functions : Error Handling
- 31. Used in email sessions Conclusion: Simplicity. For people new to programming, this is frequently the strongest appeal.Even those with little or no programming experience can quickly get up to speed and begin creating full-fledged applications.Because it was specifically designed for creating web applications.PHP has a host of built-in functions to handle common needs .THANK “U”