1: a1.php
<body bgcolor=lightyellow>
<img src=dog.png width=50>
<hr color=red>
<?php
$con = mysqli_connect('localhost', 'root', 'abc123abc123', 'selldb');
$sql= "select id,name,amount,tel from custs";
$query = mysqli_query($con, $sql);
while ($row = mysqli_fetch_array($query)){
echo $row['id'] . ":" . $row['name'] . ":" . $row['amount'] . "<br>";
}
mysqli_close ($con);
?>
<hr color=green>
<img src=cat.png width=50>
</body>
2:result HTML
<body bgcolor=lightyellow>
<img src=dog.png width=50>
<hr color=red>
10001:小狗:100<br>20002:小貓:200<br>30003:小牛:300<br><hr color=green>
<img src=cat.png width=50>
</body>