我对此有点麻烦。我有一个带有各种链接的书籍的搜索结果页面,所有链接到同一页面(book.php),我想设置一个会话变量传递到新页面,该页面应该显示更多关于特定结果链接的信息,即选择。我试图在while循环中的链接被选中时将变量$ _SESSION ['booktitle']传递给book.php。在搜索结果页面的代码是:单击链接时将会话变量传递到新页面
<form id="rform" name="formsort" action="" method="post">
<select name="sort" id="sort" onChange="document.forms['formsort'].submit()">
<option value="default">Sort Results</option>
<option value="lowhigh">Price: Low to High</option>
<option value="highlow">Price: High to Low</option>
<option value="az">Alphabetical Order: A-Z</option>
<option value="za">Alphabetical Order: Z-A</option>
</select>
<?php
if(isset($_POST['title']))
{
echo '<input type="hidden" name="title" value="'.$_POST['title'].'" />';
}
if(isset($_POST['author']))
{
echo '<input type="hidden" name="author" value="'.$_POST['author'].'" />';
}
if(isset($_POST['isbn']))
{
echo '<input type="hidden" name="isbn" value="'.$_POST['isbn'].'" />';
}
if(isset($_POST['keyword']))
{
echo '<input type="hidden" name="keyword" value="'.$_POST['keyword'].'" />';
}
?>
</form>
<?php
include "include.php";
session_start();
// Defining variables from home.php if set
$title = mysql_real_escape_string($_POST['title']);
$author = mysql_real_escape_string($_POST['author']);
$isbn = mysql_real_escape_string($_POST['isbn']);
$keyword = mysql_real_escape_string($_POST['keyword']);
if(isset($_POST['sort'])){
[email protected]$_POST['sort'];}
// Determine the WHEREs to use
$where = array();
if (! empty($title))
$where[] = "booktitle LIKE '%" . $title . "%'";
if (! empty($author))
$where[] = "author LIKE '%" . $author . "%'";
if (! empty($isbn))
$where[] = "isbn LIKE '%" . $isbn . "%'";
if (! empty($keyword))
$where[] = "description LIKE '%" . $keyword . "%'";
//Determine the ORDERs to use
$order = array();
if ((isset($sort)) && ($sort=='lowhigh'))
$order[] = "price ASC";
if ((isset($sort)) && ($sort=='highlow'))
$order[] = "price DESC";
if ((isset($sort)) && ($sort=='az'))
$order[] = "booktitle ASC";
if ((isset($sort)) && ($sort=='za'))
$order[] = "booktitle DESC";
// Build the query
$query = 'SELECT * FROM book';
if (! empty($where))
$query .= ' WHERE ' . implode(' AND ', $where);
if(! empty($sort))
$query .= ' ORDER BY ' . implode($order);
//Display results
$result = mysqli_query($con, $query) or die("Error in query $query: " . mysqli_error());
while ($row = mysqli_fetch_array($result)) {
?><a id="1" href="book.php" border="0"><img src="<?php echo $row[12]; ?>" width="112px" height="150px" /></a>
<a href="book.php?booktitle='<?php echo $_SESSION['booktitle']=$row[1];?>'"><b><?php echo $row[1] . ", (" . $row[5] . ")";?></b></a><br><?php
echo $row[2];
echo "<br><div style='text-align:right'> <b>£" . $row[9] . "</b></div>";
echo "<b>Book description:</b> " . substr($row[3],0,300) . "...<br /><hr>";
}
mysqli_close($con); //closes the connection
?>
和我使用调用它book.php中:
<?php
include "include.php";
session_start();
$book=$_SESSION['booktitle'];
$query = "SELECT * FROM book WHERE booktitle='$book'";
$result = mysqli_query($con, $query) or die("Error in query $query: " . mysqli_error());
while ($row = mysqli_fetch_array($result)) {
echo $row[1];
} ?>
但无论我选择什么书环节,第一个搜索结果中的BOOKTITLE while循环被回显出来。任何想法为什么?
任何帮助将不胜感激。
Hello @ user2197354:我会很高兴,如果我可以帮助你,但只要你能够张贴足够的代码,所以我可以站出来解决你的真正问题,因为你的代码是不够的,至少你的程序的想法或逻辑不够清晰我请你能给我额外的解释和你的问题的额外信息,然后当你发布你的代码尝试组织它的方式,将反映它的真实用途:) 我等待你的编辑,所以我可以帮助你:) –
谢谢你最后的呼吸。我希望我已经解释过这一点现在好了:) – user2197354