Day 2 - Variables - Become PHP Expert in 30 days

[admin]

http://php.flashwebhost.com/sherly/add.php

<?php

$M = 20;
$N = 50;
echo $M + $N;

It is always better to use descriptive name for variables, so you what what is stored in a variable. For example, to store mark, we use variable $mark

It is ok, but better use descriptive names for variables. One letter variable names can be confusing in most cases.