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Conditional Statements

<!DOCTYPE html>


<html lang="en">


<head>


<meta charset="UTF-8">


<meta name="viewport" content="width=device-width, initial-scale=1.0">


<title>Week 04</title>


</head>


<body>


<!-- use get method without using form -->


<a href="samplegetmethod.php">Demo of the manual GET</a><br>


<!-- use get method without using form and passing parameter-->


<a href="samplegetmethod.php?par_1=Some value">Demo of the manual GET parameter passing</a><br>


<!-- use get method without using form and passing parameter-->


<a href="samplegetmethod.php?par_1=Some value&par_2=val2">Demo of the manual GET with 2 parameter passing</a>






<hr>






<!-- use get method without using form -->


<a href="math.php?opr=add">Add</a><br>


<!-- use get method without using form -->


<a href="math.php?opr=mpy">Multiply</a><br>


<?php


$num1 = 5;


$num2 = 2;


?>


</body>


</html>
<?php


$opr = $_GET['opr'];


$num1 = 5;


$num2 = 2;


if ($opr == "add") {


$res = $num1 + $num2;


}elseif ($opr == 'mpy') {


$res = $num1 * $num2;


}else{


$res = "bad input";


}


echo "Result of " . $opr . " is : " . $res;


?>