嘗試從關係表中檢索相關數據,用戶單擊上一頁上的書名後。即使在數據庫中存在數據,也不會在頁面上打印任何內容。從PHP數據庫中檢索數據
表架構是:
relationshipID,bookone,booktwo,關係,relationlike,relationdislike
<html>
<head>
<title>Retrieve Relationships</title>
</head>
<body>
<dl>
<?php
// Connect to database server
mysql_connect("latcs7.cs.latrobe.edu.au","12ice06","EsnYkuxuwh9RbtQuRcQt") or die (mysql_error());
// Select database
mysql_select_db("12ice06") or die(mysql_error());
$sTitle=0;
// Get data from the database depending on the value of the id in the URL
$title = (isset($_GET['title']) && is_string($_GET['title'])) ? $_GET['title'] : null;
$sTitle = mysql_real_escape_string($title);
$strSQL = "SELECT R.bookone, B.title, B.author,
R.booktwo, B.title, B.author,
R.relation, R.relationlike, R.relationdislike
FROM relationships R
INNER JOIN books B ON R.bookone = B.bookid";
$rs = mysql_query($strSQL) or die(mysql_error());
// Loop the recordset $rs
while($row = mysql_fetch_array($rs)){
// Write the data of the book
echo "<dt>Book One:</dt><dd>" . $row["bookone"] . "</dd>";
echo "<dt>Title:</dt><dd>" . $row["title"] . "</dd>";
echo "<dt>Author:</dt><dd>" . $row["author"] . "</dd>";
echo "<dt>Book Two:</dt><dd>" . $row["booktwo"] . "</dd>";
echo "<dt>Title:</dt><dd>" . $row["title"] . "</dd>";
echo "<dt>Author:</dt><dd>" . $row["author"] . "</dd>";
echo "<dt>Relationship:</dt><dd>" . $row["relation"] . "</dd>";
echo "<dt>Likes:</dt><dd>" . $row["relationshiplikes"] . "</dd>";
echo "<dt>Dislikes:</dt><dd>" . $row["relationshipdislikes"] . "</dd>";
}
echo $strSQL;
// Close the database connection
mysql_close();
?>
</dl>
<p><a href="search_bookl.php">Return to the list</a></p>
</body>
</html>
請停止使用古代mysql_ *函數編寫新代碼。他們不再被維護,社區已經開始[棄用流程](http://news.php.net/php.internals/53799)。相反,您應該瞭解準備好的語句並使用[PDO](http://php.net/pdo)或[MySQLi](http://php.net/mysqli)。如果你關心學習,[這裏是一個很好的PDO相關教程](http://wiki.hashphp.org/PDO_Tutorial_for_MySQL_Developers)。 – DCoder
不幸的是它的語言,我們被告知用於這項任務。 – user1393064
你是否直接在mysql中試過這個查詢?它是否返回任何行? –