<input type="number" name="given_value" id="given_value" />
<select name="second_selected_name" id="first_select">
<?php
foreach ($name as $value) {
?>
<option value="<?php
echo $value;
?>
"><?php
echo $value;
?>
</option>
<?php
}
?>
</select>
<input type="submit" name="btn" value="Submit" id="submit" />
</form>
</div>
<div id="output_section">
<div class="output">
<?php
echo form_processing();
?>
</div>
</div>
</div>
</body>
</html>
<head>
<meta charset="UTF-8">
<title>Calculator</title>
<link rel="stylesheet" href="css/style.css" />
</head>
<body>
<h1>CALCULATOR</h1>
<div id="container">
<form action="" method="post">
<div id="result"><p>
<?php
if ($_POST) {
$number_one = $_POST["number_one"];
$number_two = $_POST["number_two"];
$oparetor = $_POST["oparetor"];
echo form_processing($oparetor, $number_one, $number_two);
}
?>
</p></div>
<div id="button">
<p>
<label for="number_one"><span class="bold">Number One:</span></label>
<input type="text" name="number_one" id="number_one" value="<?php
if (isset($number_one)) {
echo $number_one;
} else {
echo 0;
}
?>
" />
