How to use PHP variables

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How to create and use variables in PHP

Variables are used in PHP to store and manipulate values. They can be defined by using the “$” sign followed by a name of your choice.

Syntax:

      $variable_name = value;
    

Usage Examples:

Example 1: Declaring a string variable

      $name = "John";
      echo "My name is $name";
    

Example 2: Declaring a numerical variable

      $age = 25;
      $new_age = $age + 5;
      echo "My age is $new_age";
    

Parameter Values:

Parameter	Description
$variable_name	Name of the variable you want to declare
value	The value you want to assign to the variable

Technical Details:

PHP variables are case-sensitive, which means that $name, $Name, and $NAME are three different variables. Additionally, PHP has several data types that can be assigned to a variable:

• String
• Integer
• Float
• Boolean
• Array
• Object
• NULL

For more information on PHP variables and data types, see the PHP manual here.

  Written by: Steven Iversen     05-05-2023     Written in: PHP tutorials