PHP Basics #4 : Variables
PHP Variables
A variable can have a short name (like x and y) or a more descriptive name (age, carname, total_volume).
Rules for PHP variables:
- A variable starts with the $ sign, followed by the name of the variable
- A variable name must start with a letter or the underscore character
- A variable name cannot start with a number
- A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ )
- Variable names are case sensitive ($y and $Y are two different variables)
PHP Variables demonstration :
$a = "John";
$b = 'Terry';
$x = 1;
$y = 5;
$z = $x + $y ;
$float = 10.5;
echo $a;
echo '
';
echo $z;
echo '
';
echo $float;
?>
The output of the above will be:
John
6
10.5
6
10.5
Variables concept is quite easy to understand and If you have any conclusion in it please comment
PHP Basics #4 : Variables
![PHP Basics #4 : Variables]()
Reviewed by 0x000216
on
Sunday, October 19, 2014
Rating: 5
