Problem 1

Create a simple form with two input fields for the user to enter two numbers performs arithmetic operations

Solution:

Passing

<form  method="get" action="activity4handle.php">
<label for="num1">Enter 1st number: </label>
<input type="number" name="n1" id="n1">
<label for="num2">Enter 2nd number: </label>
<input type="number" name="n2" id="n2">

<input type="submit" name="add" value="Addition" id="submit">
<input type="submit" name="subtract" value="Subtraction" id="submit">
<input type="submit" name="multiply" value="Multiplication" id="submit">
<input type="submit" name="divide" value="Division" id="submit">
</form>

Handling

<?php
$string;

if(isset($_GET['add'])){
    $result = $num1 + $num2;
    $string = "$num1 + $num2 = $result";

}elseif(isset($_GET['subtract'])){
    $result = $num1 - $num2;
    $string = "$num1 - $num2 = $result";

}elseif(isset($_GET['multiply'])){
    $result = $num1 * $num2;
    $string = "$num1 * $num2 = $result";

}elseif(isset($_GET['divide'])){
    $result = $num1 / $num2;
    $string = "$num1 / $num2 = $result";
}

echo <h1>$string;
?>

Problem 2

Create a simple form that allows to input a message and counts the number of words in it.

Solution

Passing


<form action="4-2Handle.php" method="get">

<label for="msg">Input Message: </label>
<input type="text" name="message">
<input type="submit" value="Count the number of words" id="sub2">

<form>

Handling

<?php

if(isset($_GET['message'])){
    $message = $_GET['message'];
}

$result = explode(" ",$message);

$new = count($result);

echo "<h1 class='haq'>The word/s in the message are $new.";

?>