<html> <body> <form method="post" action="q1php.php"> <input type="text" name="num1" placeholder="Number 1"><br><br> <input type="text" name="num2" placeholder="Number 2"><br> <br> <select name="opr"> <option> Select from the following:</option> <option value="1">Addition</option> <option value="2">Substraction</option> <option value="3">Multiplication</option> <option value="4">Division</option> </select> <input type="submit"> </form> </body> </html>
<?php $num1=$_POST['num1']; $num2=$_POST['num2']; $opr=$_POST['opr']; if(isset($num1) && isset($num2) && isset($opr)) { //add switch case if the values are not null switch($opr) { case 1: echo"Addition"; $out=$num1 + $num2; echo"Addition of $num1 and $num2 is: $out"; break; case 2: echo"Substraction"; $out=$num1 - $num2; echo"Substraction of $num1 and $num2 is: $out"; break; case 3: echo"Multiplication"; $out=$num1 * $num2; echo"Multipication of $num1 and $num2 is: $out"; break; case 4: echo"Division"; $out=$num1 / $num2; echo"Division of $num1 and $num2 is: $out"; break; } } else{ echo"Please check the output"; } ?>
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