Creating PHP variables
A variable is a container for storing data.
In PHP, a variable must begin with the $ sign, followed by the name of the variable
When creating variables in PHP, you need to follow some basic rules.
- Variable names can have any combination of letters, numbers and the underscore;
- A variable name must start with a letter or the underscore character;
- A variable name cannot start with a number;
- A variable name can not contain spaces or hyphens;
- Variable names are case-sensitive;
Good variable names make your PHP code easy to understand and maintain. Choose names for variables that tell you what the variable is for.
$my_number = 5;
To assign a text to a variable, the text must pe put between double or simple quotes.
$my_text = "This is my text";
In a variable name use camel case or the underscore to distinguish between multiple words, like:
#firstName = "Mihai"; #first_name = "Mihai";
The variable $this is reserved for use in PHP object oriented scripts.