PHP Form Handling

PHP | var keyword

Last Updated : 26 May, 2021

The var keyword in PHP is used to declare a property or variable of class which is public by default. The var keyword is same as public when declaring variables or property of a class.
Note: The var keyword was deprecated from version 5.0.0 up to version 5.1.2. Since PHP 5.1.3 it has been added again.
Syntax:

class className {
   var $variable = "GeeksforGeeks";
   // Other statements
}

Below programs illustrate the var keyword in PHP:
Program 1: This program illustrates the var keyword.

php

<?php

// Declaring a class
class Geeks {

    // Using var keyword 
    // to declare Public variable
    var $var1 = 'Public';
    
    // Declaring protected variable
    protected $var2 = 'Protected';
    
    // Declaring private variable
    private $var3 = 'Private';
}

// Creating an object
$obj = new Geeks();

// Calling var declared variable
echo $obj->var1 . "\n";;

?>

Output:

Public

Program 2: This program illustrates the var and public keyword.

php

<?php

// Declaring a class
class Geeks {

    // Using var keyword 
    // to declare Public variable
    var $var1 = 'Var Public';
    
    // Using public keyword 
    // to declare Public variable
    public $var2 = 'Public';

}

// Creating an object
$obj = new Geeks();

// Calling var declared variable
echo $obj->var1 . "\n";

// Calling public declared variable
echo $obj->var2 . "\n";;

?>

Output:

Var Public
Public

Program 3: This program demonstrating the error while calling private variables.

php

<?php

// Declaring a class
class Geeks{

    // Using var keyword 
    // to declare Public variable
    var $var1 = 'Var Public';
    
    // Using private keyword 
    // to declare private variable
    private $var2 = 'Private';

}

// Creating an object
$obj = new Geeks();

// Calling var declared variable
echo $obj->var1 . "\n";;

// Calling private declared variable
// It will give error
echo $obj->var2 . "\n";;

?>

Output:

Var Public

Error:

PHP Fatal error:  Uncaught Error: Cannot access private property 
Geeks::$var2 in /home/46488c166fd1197d687867f62e03b8b8.php:24
Stack trace:
#0 {main}
  thrown in /home/46488c166fd1197d687867f62e03b8b8.php on line 24

PHP Form Handling

R

Rajnis09

Improve

Article Tags :

Similar Reads

PHP | Ternary Operator

If-else and Switch cases are used to evaluate conditions and decide the flow of a program. The ternary operator is a shortcut operator used for shortening the conditional statements. ternary operator: The ternary operator (?:) is a conditional operator used to perform a simple comparison or check on

What's New in PHP 7 ?

Pre-requisite: PHP 7 | Features Set 1 PHP 5 seen many minor releases, being exciting along the way, including the provision of Object-Oriented programming and many features correlated with it. So, why 7 and not 6? Almost all the features being considered for PHP 6 were ultimately executed in PHP 5.3

PHP Form Handling

Form handling is the process of collecting and processing information that users submit through HTML forms. In PHP, we use special tools called $_POST and $_GET to gather the data from the form. Which tool to use depends on how the form sends the dataâ€”either through the POST method (more secure, hid

The Full form of PHP is Hypertext Preprocessor and earlier it was abbreviated as Personal Home Page. It is a general-purpose programming language used to design a website or web application. It is the server-side scripting language embedded with HTML to develop Static website, Dynamic website, or We

PHP Array Programs

PHP Arrays is a type of data structure that allows us to store multiple elements of similar data type under a single variable thereby saving us the effort of creating a different variable for every data. S. No Articles 1PHP Program to Insert a New Element in an Array2PHP Program to Find the Index of

PHP 7 | Features

Lots of features have been added in PHP7. After the release of PHP7, performance has been increased by 25-70% for the website. Now we will discuss the PHP7 features one by one through example. Scalar Datatype Hinting: Scalar datatypes are boolean, integer, float and string. Earlier we were unable to

How to Copy String in PHP ?

Copying a string is a basic operation that all the programming languages offer. In this article, we will explore different approaches to copying a string in PHP, including using the assignment operator, the strval() function, the substr() function and by implementing the strcpy() function.Table of C

PHP Access Modifiers

In object-oriented programming, access specifiers are also known as access modifiers. These specifiers control how and where the properties or methods of a class can be accessed, either from inside the class, from a subclass, or from outside the class. PHP supports three primary access specifiers: p

PHP foreach Loop

The foreach loop in PHP is a powerful and convenient way to iterate over arrays and objects. The foreach loop though iterates over an array of elements, the execution is simplified and finishes the loop in less time comparatively. In this article, we will explore the foreach loop in detail, includin

Scope Resolution operator in PHP

The scope resolution operator also known as Paamayim Nekudotayim or more commonly known as the double colon is a token that allows access to static, constant, and overridden properties or methods of a class. It is used to refer to blocks or codes in context to classes, objects, etc. An identifier is