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  • 1.1 PHP Intro
  • 1.2 PHP Install
  • 1.3 PHP Syntax
  • 1.4 PHP Comments
  • 1.5 PHP Variables
  • 1.5.1 Variables Scope
  • 1.6 PHP Echo / Print
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    1.1 PHP Intro

  • 1.1 PHP Intro
  • 1.2 PHP Install
  • 1.3 PHP Syntax
  • 1.4 PHP Comments
  • 1.5 PHP Variables
  • 1.5.1 Variables Scope
  • 1.6 PHP Echo / Print
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  • 2.1 PHP Data Types
  • 2.2 PHP Strings
  • 2.3 PHP Numbers
  • 2.4 PHP Math
  • 2.5 PHP Constants
  • 2.6 PHP Casting
  • 2.7 PHP Magic Constants
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  • 3.1 PHP Operators
  • 3.2 PHP If Else Elseif
  • 3.3 PHP Switch
  • 3.4 PHP Loops
  • 3.4.1 While Loop
  • 3.4.2 Do While Loop
  • 3.4.3 For Loop
  • 3.4.4 Foreach Loop
  • 3.4.5 Break/Continue
  • 3.5 PHP Functions
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  • 4.1 PHP Arrays
  • 4.1.1 Indexed Arrays
  • 4.1.2 Associative Arrays
  • 4.1.3 Multidimensional Arrays
  • 4.1.4 Sorting Arrays
  • 4.2 PHP Superglobals
  • 4.2.1 $GLOBALS
  • 4.2.2 $_SERVER
  • 4.2.3 $_REQUEST
  • 4.2.4 $_POST
  • 4.2.5 $_GET
  • 4.3 PHP RegEx
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  • 5.1 PHP Form Handling
  • 5.2 PHP Form Validation
  • 5.3 PHP Form Required
  • 5.4 PHP Form URL / E-mail
  • 5.5 PHP Form Complete
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  • 6.1 PHP Date and Time
  • 6.2 PHP Include Files
  • 6.3 PHP File Handling
  • 6.4 PHP File Open/Read
  • 6.5 PHP File Create/Write
  • 6.6 PHP File Upload
  • 6.7 PHP Cookies
  • 6.8 PHP Sessions
  • 6.9 PHP Filters
  • 6.10 PHP Filters Advanced
  • 6.11 PHP Callback Functions
  • 6.12 PHP JSON
  • 6.13 PHP Exceptions
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  • 7.1 PHP What is OOP
  • 7.2 PHP Classes / Objects
  • 7.3 PHP Constructor
  • 7.4 PHP Destructor
  • 7.5 PHP Access Modifiers
  • 7.6 PHP Inheritance
  • 7.7 PHP Class Constants
  • 7.8 PHP Abstract Classes
  • 7.9 PHP Interfaces
  • 7.10 PHP Traits
  • 7.11 PHP Static Methods
  • 7.12 PHP Static Properties
  • 7.13 PHP Namespaces
  • 7.14 PHP Iterables
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  • 8.1 MySQL Database
  • 8.2 MySQL Connect
  • 8.3 MySQL Create DB
  • 8.4 MySQL Create Table
  • 8.5 MySQL Insert Data
  • 8.6 MySQL Get Last ID
  • 8.7 MySQL Insert Multiple
  • 8.8 MySQL Prepared
  • 8.9 MySQL Select Data
  • 8.10 MySQL Where
  • 8.11 MySQL Order By
  • 8.12 MySQL Delete Data
  • 8.13 MySQL Update Data
  • 8.14 MySQL Limit Data
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  • 9.1 PHP XML Parsers
  • 9.2 PHP SimpleXML Parser
  • 9.3 PHP SimpleXML - Get
  • 9.4 PHP XML Expat
  • 9.5 PHP XML DOM
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  • 10.1 AJAX Intro
  • 10.2 AJAX PHP
  • 10.3 AJAX Database
  • 10.4 AJAX XML
  • 10.5 AJAX Live Search
  • 10.6 AJAX Poll
  • My Poll
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    • PHP code is executed on the server.

    What You Should Already Know

    What is PHP?

    • PHP is an acronym for "PHP: Hypertext Preprocessor"
    • PHP is a widely-used, open source scripting language
    • PHP scripts are executed on the server
    • PHP is free to download and use
    PHP is an amazing and popular language!
    • It is powerful enough to be at the core of the biggest blogging system on the web (WordPress)!
    • It is deep enough to run large social networks!
    • It is also easy enough to be a beginner's first server side language!

    What is a PHP File?

    • PHP files can contain text, HTML, CSS, JavaScript, and PHP code
    • PHP code is executed on the server, and the result is returned to the browser as plain HTML
    • PHP files have extension ".php"

    What Can PHP Do?

    • PHP can generate dynamic page content
    • PHP can create, open, read, write, delete, and close files on the server
    • PHP can collect form data
    • PHP can send and receive cookies
    • PHP can add, delete, modify data in your database
    • PHP can be used to control user-access
    • PHP can encrypt data

    With PHP you are not limited to output HTML. You can output images, PDF files, and even Flash movies. You can also output any text, such as XHTML and XML.

    Why PHP?

    • PHP runs on various platforms (Windows, Linux, Unix, Mac OS X, etc.)
    • PHP is compatible with almost all servers used today (Apache, IIS, etc.)
    • PHP supports a wide range of databases
    • PHP is free. Download it from the official PHP resource: www.php.net (Links to an external site).
    • PHP is easy to learn and runs efficiently on the server side

    What's new in PHP 7

    • PHP 7 is much faster than the previous popular stable release (PHP 5.6)
    • PHP 7 has improved Error Handling
    • PHP 7 supports stricter Type Declarations for function arguments
    • PHP 7 supports new operators (like the spaceship operator: <=>)

    PHP Fundamentals course home
    Module 1. Introduction to PHP

    Navigate this module
  • 1.1 PHP Intro
  • 1.2 PHP Install
  • 1.3 PHP Syntax
  • 1.4 PHP Comments
  • 1.5 PHP Variables
  • 1.5.1 Variables Scope
  • 1.6 PHP Echo / Print
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    Animated PHP icons used in the buttons provided by ICONS8.COM. Smartphone icons created by Freepik - Flaticon

    Example files created in this module:
    My first PHP page - Hello World PHP Case Sensitivity - Hello World PHP Case Sensitivity - Color World Syntax for single-line comments Syntax for multiple-line comments: Using comments to leave out parts of the code: Declaring PHP Variables Output Variables part 1 Output Variables part 2 Output Variables part 3 Variable with global scope: Variable with local scope: PHP The global Keyword part 1 PHP The global Keyword part 2 PHP The static Keyword The PHP echo Statement part 1 The PHP echo Statement part 2 The PHP print Statement part 1 The PHP print Statement part 2