PHP variable
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 :- Related Post :- world wide web and internet how to comment in html code how to create login form in php