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Subjects

JAVASCRIPTHTMLCSSPYTHONSQLJAVACPPCSHARPPHPTYPESCRIPTCRUBYGOSWIFTKOTLINRUSTRBASHSCALAOBJECTIVE-CDARTPERLLUAMATLABXMLJSONMARKDOWNASSEMBLYLATEXYAMLSOLIDITYBLOCKCHAIN

Topics

PHP Basics

Introduction to PHPInstalling PHPPHP SyntaxPHP CommentsPHP VariablesPHP Echo / PrintPHP Data TypesPHP StringsPHP NumbersPHP ConstantsPHP OperatorsPHP If...Else...ElseifPHP SwitchPHP LoopsPHP FunctionsPHP ArraysPHP Superglobals

PHP Forms

PHP Form HandlingPHP Form ValidationPHP Form RequiredPHP Form URL/E-mailPHP Form Complete

PHP Advanced

PHP Date and TimePHP IncludePHP File HandlingPHP File Open/ReadPHP File Create/WritePHP File UploadPHP CookiesPHP SessionsPHP FiltersPHP Filters AdvancedPHP Callback FunctionsPHP JSONPHP Exceptions

PHP OOP

PHP OOP IntroPHP Classes/ObjectsPHP ConstructorPHP DestructorPHP Access ModifiersPHP InheritancePHP ConstantsPHP Abstract ClassesPHP InterfacesPHP TraitsPHP Static MethodsPHP Static PropertiesPHP NamespacesPHP Iterables

PHP Database

PHP MySQL DatabasePHP Connect to MySQLPHP Create MySQL DatabasePHP Create MySQL TablePHP Insert MySQL DataPHP Get Last Inserted IDPHP Insert Multiple RecordsPHP Prepared StatementsPHP Select MySQL DataPHP Delete MySQL DataPHP Update MySQL DataPHP Limit MySQL Data

PHP XML

PHP XML ParsersPHP SimpleXML ParserPHP SimpleXML - GetPHP XML ExpatPHP XML DOM

PHP Security

PHP SecurityPHP Password HashingPHP E-mail InjectionPHP Cross Site Scripting (XSS)

PHP Best Practices

PHP Coding StandardsPHP Error HandlingPHP Performance OptimizationPHP Debugging TechniquesPHP Unit Testing

PHP and Web Services

PHP AJAX IntroductionPHP AJAX PHPPHP AJAX DatabasePHP AJAX XMLPHP AJAX Live SearchPHP AJAX Poll

PHP Extensions

PHP cURLPHP GDPHP XML-RPCPHP Multibyte String

Introduction to PHP

PHP (Hypertext Preprocessor) is a widely-used, open-source scripting language primarily designed for web development. It's known for its simplicity and versatility, making it an excellent choice for beginners and experienced developers alike.

What is PHP?

PHP is a server-side scripting language embedded in HTML. It's used to create dynamic web pages and interact with databases. Unlike client-side languages like JavaScript, PHP code is executed on the server, generating HTML that is then sent to the client.

Key Features of PHP

  • Easy to learn and use
  • Cross-platform compatibility
  • Supports various databases
  • Extensive library of built-in functions
  • Large and active community support

Basic PHP Syntax

PHP code is enclosed within special start and end processing instructions . Here's a simple example:

In this example, the PHP code outputs "Hello, World!" to the browser. The echo statement is used to output text.

Variables in PHP

Variables in PHP start with a dollar sign ($) followed by the variable name. They are dynamically typed, meaning you don't need to declare the type explicitly.

This code demonstrates how to declare variables and concatenate them with strings using the dot (.) operator.

PHP in Web Development

PHP is commonly used for:

  • Server-side scripting
  • Command-line scripting
  • Writing desktop applications

Its integration with web servers like Apache makes it a popular choice for developing dynamic websites and web applications.

Getting Started with PHP

To begin working with PHP, you'll need to install PHP on your system or use a web hosting service that supports PHP. Once set up, you can start writing PHP scripts and exploring its various features.

Next Steps

After grasping the basics, you can delve deeper into PHP by exploring:

Remember, practice is key to mastering PHP. Start with small projects and gradually build your skills.