PHP - Programming Language
This course covers the basics of programming in PHP. Work your way through the videos/articles and I'll teach you everything you need to know to start your programming journey!
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Building A Better Calculator

Lesson 22
Author : Mike Dane
Last Updated : November, 2017


<form action="site.php" method="GET"> Num1: <input type="number" name="num1"> Operator: <input type="text" name="op"> Num2: <input type="number" name="num2"> <input type="submit"> </form> <?php $num1 = $_GET["num1"]; $num2 = $_GET["num2"]; $op = $_GET["op"]; if($op == "+"){ echo $num1 + $num2; } elseif($op == "-"){ echo $num1 - $num2; } elseif($op == "/"){ echo $num1 / $num2; } elseif($op == "*"){ echo $num1 * $num2; } else { echo "Invalid Operator"; } ?>