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PHP Overview
PHP OverviewPHP is a server-side scripting language, which is used to manage dynamic web pages, databases, and build web...
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PHP MySQL
What is MySQL?MySQL is a Database Management System.What is a Database Management System?The software system that enable...
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Static Methods
Static MethodsIn certain cases where we need to access methods and properties in terms of class rather than an object, t...
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Static Properties
Static PropertiesStatic properties can be accessed directly without creating an instance of a class. Static properties c...
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Superglobals
SuperglobalsSuperglobals are built-in variables that are always available in all scopes. There is no need to do global $...
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$GLOBALS
$GLOBALS$GLOBALS is a superglobal variable, which is also an array that stores all the global scope variables and is use...
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$_SERVER
$_SERVER$_SERVER is a superglobal variable which holds the data about the headers, script locations, network addresses,...
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$_REQUEST
$_REQUESTThe PHP $_REQUEST is a PHP superglobal variable that is used to collect the data after submitting an HTML form....
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$_POST
$_POSTThe PHP $_POST is a PHP superglobal which is used to collect form data after submitting an HTML form using method=...
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$_GET
$_GETThe PHP $_GET is a PHP superglobal which is used to collect form data after submitting an HTML form using method="g...
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$_COOKIE
$_COOKIECookieCookie is a small file that the server embeds on the user's computer. Each time the computer opens a webpa...
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$_SESSION
$_SESSIONA session is a way to store information to be used across multiple pages. Session variables store user informat...
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Traits
TraitsPHP language only supports single-level inheritance where a child class can inherit only from one single parent. I...
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Connecting to MySQL
Connecting to MySQLIn order to access the data in the MySQL database, first we need to connect to the database. Now, the...
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Creating a MySQL Database
Creating a MySQL DatabaseWe can use the CREATE DATABASE query inside a PHP script to create a new database in MySQL.Ther...
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Creating Table in MySQL
Creating Table in MySQLWe can create a table in a database using the CREATE TABLE query in MySQL. Let's create a simple...
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Inserting Data in MySQL
Inserting Data in MySQLIn MySQL, the INSERT INTO statement is used to add new records to a MySQL table. The string value...
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Selecting Data in MySQL
Selecting Data in MySQLTo select data from one or more tables in MySQL, we can use the SELECT query. To select a single...
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Updating Data in MySQL
Updating Data in MySQLUpdating data in MySQL is very easy with the UPDATE statement. Let's assume we have this table whe...
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Deleting Data in MySQL
Deleting Data in MySQLTo delete data in the MySQL database, we can use the DELETE statement.Query:DELETE FROM table_name...
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Include & Require
Include & RequireThe include & require statements take all the contents of a specified file and put it into anot...
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File Handling
File HandlingIn PHP, we can also perform file operations like creating and opening a file, editing a file, etc. We have...
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Arrays
ArraysAn array is a collection of data items of the same data type. And it is also known as a subscript variable.Example...
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PHP Comments
PHP CommentsA comment is a part of the coding file that the programmer does not want to execute. Rather, the programmer...
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Variables in PHP
Variables in PHPVariables are containers that can store information which can be manipulated or referenced later by the...
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Variable Scope
Variable ScopeThe scope of the variable is the area within which the variable has been created. Based on this, a variabl...
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PHP DataTypes
PHP DataTypesData type specifies the type of value a variable requires to do various operations without causing an error...
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PHP Operators
PHP OperatorsPHP has different types of operators for different operations. They are as follows:1. Arithmetic OperatorsA...
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PHP Conditional Statements
PHP Conditional StatementsConditional Statements are used to perform actions based on different conditions. Sometimes wh...
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PHP Iterative Statements
PHP Iterative StatementsIterative statements are used to run the same block of code over and over again for a certain nu...
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PHP Function
Function BasicsFunction arguments are variables of some supported data type that are processed within the body of the fu...
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Function Arguments
Function ArgumentsFunction Arguments: Argument is just like a variable which can be used to pass through information to...
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OOPS
OOPSOOP stands for Object-Oriented Programming.Object-oriented programming is a core of PHP Programming, which is used f...
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Classes
ClassesClasses are the blueprint of objects. Classes hold their own data members and member functions, which can be acce...
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Objects
ObjectsObject is an instance of class. An Object is a self-contained component which consists of methods and properties...
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Inheritance
InheritanceWhen a class is defined by inheriting the existing function of a parent class, it is called inheritance. Here...
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Constructors and Destructors
Constructors and DestructorsConstructorIn PHP, a constructor allows you to initialize an object's properties upon the cr...
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Access Modifiers
Access ModifiersIn the PHP programming language, every property and method of a class can have access modifiers which co...
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Interface
InterfaceInterfaces permit users to programmatically define the public methods that a class should implement without bot...
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Abstract Classes
Abstract ClassesAbstract classes and methods are when the parent class has a named method but the child class needs to c...
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Class Constants
Class ConstantsConstants are like variables except that once they are defined, they cannot be changed. If we need to def...