<!DOCTYPE html>
<html lang="vi">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
ul {
padding: 0;
}
</style>
</head>
<body>
Bài 1:
<form action="hello.php" method="post">
<label>Họ tên: </label>
<input type="text" name="name">
<button type="submit">Submit</button>
</form>
<br><br>Bài 2:
<form action="./" method="get">
<input type="text" name="keyword" placeholder="Từ khóa...">
<button type="submit">Tìm</button>
</form>
<?php
$keyword = isset($_GET['keyword']);
if ($keyword) echo "Kết quả tìm kiếm với từ khoá " . $_GET['keyword'];
?>
<br><br>Bài 3:
<?php
$name = isset($_GET['name']) ? $_GET['name'] : "";
$email = isset($_GET['email']) ? $_GET['email'] : "";
$website = isset($_GET['website']) ? $_GET['website'] : "";
$comment = isset($_GET['comment']) ? $_GET['comment'] : "";
$gender = isset($_GET['gender']) ? $_GET['gender'] : "";
?>
<form action="./" method="get">
<div>
<label>Name: </label>
<input type="text" name="name" value=<?php echo $name ?>>
</div>
<div>
<label>Email: </label>
<input type="email" name="email" value=<?php echo $email ?>>
</div>
<div>
<label>Website: </label>
<input type="text" name="website" value=<?php echo $website ?>>
</div>
<div>
<label>Comment: </label>
<textarea name="comment" cols="30" rows="10"><?php echo $comment ?></textarea>
</div>
<div>
<label>Gender: </label>
<input type="radio" name="gender" value="1" <?php echo $gender == "1" ? "checked" : null ?>> Female
<input type="radio" name="gender" value="2" <?php echo $gender == "2" ? "checked" : null ?>> Male
</div>
<button type="submit">Submit</button>
</form>
Name: <?php echo $name ?><br>
Email: <?php echo $email ?><br>
Website: <?php echo $website ?><br>
Comment: <?php echo $comment ?><br>
Gender: <?php if ($gender) echo $gender == "2" ? "Male" : "Female" ?><br>
<br><br>Bài 4:<br>
<form action="menu.php" method="post">
<div style="display: flex; justify-content: space-around;">
<div>
<label>Món khai vị: </label><br>
<select multiple name="khaivi[]" id="">
<option>Gỏi ngó sen</option>
<option>Salat cá ngữ</option>
<option>Bò trộn rau thơm</option>
<option>Thịt nguội</option>
</select>
</div>
<div>
<label>Món chính: </label><br>
<select multiple name="monchinh[]" id="">
<option>Bò hầm</option>
<option>Cá chẽm sốt cà</option>
<option>Tôm rang muối</option>
<option>Cua sốt me</option>
</select>
</div>
<div>
<label>Món tráng miệng: </label><br>
<select multiple name="trangmieng[]" id="">
<option>Chè hạt sen</option>
<option>Bánh plan</option>
<option>Rau câu</option>
</select>
</div>
</div>
<br>
<div style="text-align: center;">
<button type="submit">Submit</button>
</div>
</form>
</body>
</html>