VIDEO
//connect.php <?php
//Kết nối đến server DB:
$link=@mysqli_connect("localhost","root","") or die("Không thể kết nối đến Server!");
//Chọn database cần thao tác:
mysqli_select_db($link,"webtintuc") or die("Không tồn tại DB này!");
mysqli_query($link,"set names 'utf8'");
?> //b1.php <!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>b1_duc.php</title>
</head>
<body>
<form method="get" id="form1" name="form1">
<p>
<label for="chungloai">Chủng loại sp:</label>
<select name="chungloai" id="chungloai">
<?php
include("connect.php");
$sl="select * from webtm_chungloaisp";
$kq=mysqli_query($link,$sl);
while($d=mysqli_fetch_array($kq))
{
?>
<option value="<?php echo $d['idCL'];?>"><?php echo $d['TenCL'];?></option>
<?php }?>
</select>
<input name="thuchien" type="submit" id="thuchien" value="loc">
</p>
<?php
if(isset($_GET['chungloai']))
{
$idCL=$_GET['chungloai'];
$slloai="select * from webtm_loaisp where idCL=$idCL";
$kqloai=mysqli_query($link,$slloai);
?>
<p>
<label for="loaisp">Loại sp:</label>
<select name="loaisp" id="loaisp">
<?php
while($dloai=mysqli_fetch_array($kqloai))
{
?>
<option value="<?php echo $dloai['idLoai'];?>"><?php echo $dloai['TenLoai'];?></option>
<?php }?>
</select>
</p>
<?php }?>
</form>
</body>
</html> //Kết Quả:
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