Ini adalah operasi pengurangan menggunakan PHP
Berikut kodenya
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Belajar PHP Awal</title>
<style>
.kotak {
background:linear-gradient(to bottom, #eee, #fafafa);
padding:10px;
width:300px;
height:auto;
border:2px solid #ddd;
box-shadow:0 2px 9px #ddd;
margin:auto;
margin-top:100px;
}
input[type=email],
input[type=number],
input[type=password],
input[type=tel],
input[type=text],
input[type=url] {
-moz-appearance: none;
-webkit-appearance: none;
appearance: none;
display: inline-block;
width:234px;
height: 36px;
padding: 0 8px;
margin: 0;
background: #fff;
border: 1px solid #d9d9d9;
border-top: 1px solid #c0c0c0;
-moz-box-sizing: border-box;
-webkit-box-sizing: border-box;
box-sizing: border-box;
-moz-border-radius: 1px;
-webkit-border-radius: 1px;
border-radius: 1px;
font-size: 15px;
color: #404040;
}
input[type=email]:hover,
input[type=number]:hover,
input[type=password]:hover,
input[type=tel]:hover,
input[type=text]:hover,
input[type=url]:hover {
border: 1px solid #b9b9b9;
border-top: 1px solid #a0a0a0;
-moz-box-shadow: inset 0 1px 2px rgba(0,0,0,0.1);
-webkit-box-shadow: inset 0 1px 2px rgba(0,0,0,0.1);
box-shadow: inset 0 1px 2px rgba(0,0,0,0.1);
}
input[type=email]:focus,
input[type=number]:focus,
input[type=password]:focus,
input[type=tel]:focus,
input[type=text]:focus,
input[type=url]:focus {
outline: none;
border: 1px solid #4d90fe;
-moz-box-shadow: inset 0 1px 2px rgba(0,0,0,0.3);
-webkit-box-shadow: inset 0 1px 2px rgba(0,0,0,0.3);
box-shadow: inset 0 1px 2px rgba(0,0,0,0.3);
}
input[type=submit] {
background: linear-gradient(to bottom, #0088CC, #0044CC);
border: 1px solid #0088CC;
color: #FFF;
margin: 4px 10px;
padding: 5px;
width: 100px;
border-radius:4px;
}
input[type=submit]:hover {
cursor: pointer;
}
input[type=submit]:active {
background: #0044CC;
}
</style>
</head>
<body>
<div class="kotak">
<form action="" method="post">
<input type="text" name="a" value="" />
<br />
<input type="text" name="b" value="" />
<br />
<input type="submit" name="hitung" value="Hitung" />
<br />
<?php
if (isset($_POST['hitung'])){
$a = $_POST['a'];
$b = $_POST['b'];
$hasil =0;
$hasil = $a - $b;
echo "Hasil = $hasil";
}
?>
</form>
</div>
</body>
</html>
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