![](/img/trans.png)
[英]select data from one table, check against and pull values from second table
[英]No errors prompted - cannot pull data from second table
2個表, users
和useradvert
(在sql中都具有良好的關系,只是不能從第二個表useradvert
提取數據)。 與表useradvert
(索引useradvert
id
)相關的表User
(主鍵id
)。 下面是摘錄。
//從表用戶和表用戶廣告中調用記錄,並加入
if(isset($_POST['username'])){
$userName = $_POST['username'];
$query = "SELECT users.id, users.name, users.username, users.telno, useradvert.id, useradvert.name2, useradvert.color2, useradvert.hobby2, useradvert.radiobtn, useradvert.kupon, useradvert.image, useradvert.image2 ". "FROM users
LEFT JOIN useradvert ON useradvert.id = users.id"." WHERE username= ?";
$stmt = $conn->prepare($query);
$stmt->bind_param('s',$userName);
$stmt->execute();
$res = $stmt->get_result();
$row = $res->fetch_array();
$_SESSION['id'] = $row['id'];
$_SESSION['name'] = $row['name'];
$_SESSION['username'] = $row['username'];
$_SESSION['telno'] = $row['telno'];
$_SESSION['name2'] = $row['name2'];
$_SESSION['color2'] = $row['color2'];
$_SESSION['hobby2'] = $row['hobby2'];
$_SESSION['radiobtn'] = $row['radiobtn'];
$_SESSION['kupon'] = $row['kupon'];
$_SESSION['image'] = $row['image'];
$_SESSION['image2'] = $row['image2'];
}
?>
繼續下面的摘錄...
</head>
<body>
<div id="apDiv3">
<p> </p>
<p> </p>
<p> </p>
<p><span class="TabbedPanelsContent">
<?php
//display record from table- users (parent table can display)
echo $_SESSION['id']."<br/>";
echo $_SESSION['name']."<br/>";
echo $_SESSION['username']."<br/>";
echo $_SESSION['telno']."<br/>";
?>
<?php
//display records from table -useradvert (child table cannot display)
while($row = $res->fetch_array()){
"<br/>";
"<br/>";
"<br/>";
echo $_SESSION['id']."<br/>";
echo $_SESSION['name2']."<br/>";
echo $_SESSION['color2']."<br/>";
echo $_SESSION['hobby2']."<br/>";
echo $_SESSION['radiobtn']."<br/>";
echo $_SESSION['kupon']."<br/>";
echo $_SESSION['image']."<br/>";
echo $_SESSION['image2']."<br/>";
}
?>
請幫忙
下面的答案(我正在分享此信息,以便世界上有相同問題的任何人都可以將此作為指導。)
if(isset($_POST['username'])){
$userName = $_POST['username'];
$query = "SELECT id, name, username, telno FROM users WHERE username = ?";
$stmt = $conn->prepare($query);
$stmt->bind_param('s', $userName);
$stmt->execute();
$res = $stmt->get_result();
$row = $res->fetch_array();
$_SESSION['id'] = $row['id'];
$_SESSION['name'] = $row['name'];
$_SESSION['username'] = $row['username'];
$_SESSION['telno'] = $row['telno'];
$query = "SELECT useradvert.name2, useradvert.color2, useradvert.hobby2,useradvert.radiobtn, useradvert.kupon, useradvert.image, useradvert.image2 FROM users INNER JOIN useradvert ON users.id=useradvert.id ";
$stmt = $conn->prepare($query);
$stmt->execute();
$res = $stmt->get_result();
$row2 = $res->fetch_array();
// $_SESSION['name'] = $row2['name'];
$_SESSION['name2'] = $row2['name2'];
$_SESSION['color2'] = $row2['color2'];
$_SESSION['hobby2'] = $row2['hobby2'];
$_SESSION['radiobtn'] = $row2['radiobtn'];
$_SESSION['kupon'] = $row2['kupon'];
$_SESSION['image'] = $row2['image'];
$_SESSION['image2'] = $row2['image2'];
}
?>
在同一頁面上提取以下內容。
<?php
//display record from table- users (parent table)
echo $_SESSION['id']."<br/>";
echo $_SESSION['name']."<br/>";
echo $_SESSION['username']."<br/>";
echo $_SESSION['telno']."<br/>";
?>
在同一頁面上提取以下內容。
<?php
//display record from table- useradveret -(child table)
while($row = $res->fetch_array()){
// echo $_SESSION['name']."<br/>";
echo $_SESSION['name2']."<br/>";
echo $_SESSION['color2']."<br/>";
echo $_SESSION['hobby2']."<br/>";
echo $_SESSION['radiobtn']."<br/>";
echo $_SESSION['kupon']."<br/>";
echo $_SESSION['image']."<br/>";
echo $_SESSION['image2']."<br/>";}
?>
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.