PHP Variables are used to store data in a program. In PHP, a variable is created by using the dollar sign ($) followed by the name of the variable. PHP is a loosely typed language, which means that you don’t have to declare the data type of the variable before using it. The data type of the variable is determined by the value that is assigned to it.
Declaring a PHP Variable
To declare a variable in PHP, you need to use the dollar sign ($) followed by the name of the variable. Here is an example:
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<?php $name = "Josh"; $age = 35; ?> |
In the above example, we have declared two variables: $name and $age. $name stores the string “Josh”, while $age stores the integer value 35.
Variable Names
Variable names in PHP can contain letters, numbers, and underscores. However, the first character of a variable name must be a letter or an underscore. Variable names are case-sensitive, which means that $name and $Name are two different variables.
Assigning Values to Variables
To assign a value to a variable in PHP, you need to use the equal sign (=). In the above example, we have assigned the string “Josh” to the variable $name and the integer value 35 to the variable $age.
Outputting Variables
To output the value of a variable in PHP, you can use the echo statement. Here is an example:
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<?php $name = "Josh"; echo "My name is " . $name; ?> |
In the above example, we have used the echo statement to output the string “My name is ” followed by the value of the variable $name.
PHP Variables Summary
PHP variables are an essential part of programming in PHP. They allow you to store and manipulate data in your programs. In this tutorial, we have discussed how to declare variables, assign values to variables, and output variables in PHP. By understanding these concepts, you will be able to use variables effectively in your PHP programs.