Example Program illustrating variables

<?php
$var = 'Bob';                          //Note: Var all in small letters
$vAr =28;                             //Note: vAr, A is capitalized 
$Var = 'Joe';                         //Note: V is capital in var
echo "$var, $Var, $vAr";      // outputs "Bob, Joe ,28"

$4site = 'not yet';                 // invalid; starts with a number
$_4site = 'not yet';              // valid; starts with an underscore
$täyte = 'mansikka';           // valid; 'ä' is (Extended) ASCII 228.
?>


Explanation:


This program  shows the case-sensitivity of PHP variables.
In the above Example $var $vAr $Var are different