Creating (Declaring) PHP Variables
PHP has no command for declaring a variable.A variable is created the moment you first assign a value to it:
$txt="Hello world!";
$x=5;
$x=5;
Rules for PHP variables:
- A variable starts with the $ sign, followed by the name of the variable
- A variable name must begin with a letter or the underscore character
- A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ )
- A variable name should not contain spaces
- Variable names are case sensitive ($y and $Y are two different variables)
PHP varialbles are the main Parts of a PHP script.
In this Script we will assign our all components for eg. name,age,password,email etc...
In this Script we will assign our all components for eg. name,age,password,email etc...
Now using PHP Variables we are going to make a Simple Addition Function Which is Shown Below:
<?php
$x=5;
$y=6;
$z=$x+$y;
echo $z;
?>
OUTPUT: 15
Note:- In this PHP script x and y becomes variables beacuse we start them with $ letter.