PHP variable
1] variables are declared /represent with a dollar sign ($) by the variable name.
2] A variable is a container to store to add values() of
Type :-
1] int
2] float
3] string
4] boolean
5] array
6] object
7] resources etc.
3] Variable names must begin with a letter or underscore character, followed by any combination of letters, numbers, or underscores.
Rules Variable Declaration
1] variable name must start with any Alphabet or symbol , variable name.
2] Can not start with a number.
eg :- $s1 = correct , $1s = wrong
3] PHP variable name are case sensitive .
EG- $a ,$A, are two different variables.
PHP variable
Program :-
<?php$no1=10;$no2=5;echo $no1+$no2;?>PHP variable
Output :-
<?php
$no1=10;
$no2=5;
echo $no1+$no2;
?>
Output :-
