PHP Variables
PHP Data Types
PHP Echo & Print
PHP Strings
PHP Numbers
PHP Constants
PHP Operators
PHP if...else...elseif Statements
Switch Statement
PHP Loops
PHP Arrays
Superglobals
PHP Coding Standards
PHP Form Handling
PHP Form Validation
PHP URLs Validation
PHP Form Required Validation
Complete Form Example
PHP File Functions Open/Read
PHP File Create/Write
PHP File Upload
PHP Cookies Handling
PHP Session Handling
PHP filter_var() Function
PHP Validation Filters
PHP Sanitization Filters
Using Filters
Filters Advanced
JSON
PHP Date and Time
MySQL Database
MySQL Connect
MySQL Commands-Creating a Table
MySQL Commands-Inserting The data
MySQL Commands-Prepared Statement
MySQL Commands-Selecting The Data
MySQL Commands-Where and Order By
MySQL Commands-Deleting And Updating The Data
PHP-OOP Introduction
PHP-Classes/Objects
PHP-Constructor/Destructor
PHP-Access Modifiers
PHP-Inheritance
PHP-Inheritance and Protected Access Modifier
PHP-Overriding Inherited Methods
PHP-Final keyword
PHP-Abstract Classes
PHP-Constants
PHP-Traits
PHP-Static Methods and Properties
Introduction to Functions
Defining A function
Returning Values From A Function
Dynamic Function Calls
Variable Scope
Understanding Arguments Or Parameters
Testing For A Function Existence
Returning Multiple Values From A Function
Making practical Use By Building Code Libraries For Code Re-usability
Using Include() And Require()
In Object Oriented programming used in PHP, static methods are the methods that can be called directly without creating any object for that class. You can declare these methods using static keyword.
Syntax:
class class_name {
public static function function_name ()
{
//code to be executed
}
}
You can use the static method using (::) and method name.
For example:
class Hello {
public static function greeting() {
echo “Welcome to our website!”;
}
}
Hello :: greeting(); //Calling static method without creating object.
?>
Similarly, we can call static properties declared using static keyword without creating an instance of a class.
Syntax:
class class_name {
public static $variable_name = value;
}
?>
You can use the static property using double colon and property name.
For example:
class max {
public static $max_visitors = 40;
}
echo max :: $max_visitors ;
?>
In above example we have declared a static property and a value of the variable. And we have called it without creating any object of the max class.
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