如果找不到".php？date="，有人能告诉我如何重定向到另一个页面吗。我有明确的观点，我认为这就是问题所在，那么如何解决呢？感谢
<!--====================
左块.php==========================-->
<ul class="side-block">
<li><a href="#">არქივი</a></li>
<?php
$archive = mysqli_query($db,"SELECT DISTINCT left(date,7) as month FROM blog ORDER BY month DESC , id DESC LIMIT 6");
while($myrow = mysqli_fetch_array($archive)){
printf('<li><a href="date.php?date=%s" class="custom">%s</a></li>',$myrow["month"],$myrow["month"]);
}
?>
</ul>
<!--
===============================================
date.php
===============================================
-->
<?php
include 'bd/blocks/bd.php';
$result = mysqli_query($db,"SELECT keywords,description,author FROM page WHERE page='blog'");
$myrow = mysqli_fetch_array($result);
if(isset($_GET['date']) && !empty($_GET['date'])){
$date = $_GET['date'];
}
elseif (!isset($_GET['date']) && empty($_GET['date'])) {
header("Location: index.php");
exit;
}
else{
header("Location: index.php");
exit;
}
$date= "$date";
$dates=substr($date,0,7);
$result2 = mysqli_query($db,"SELECT date FROM blog WHERE date='$dates' ");
$myrow2=mysqli_fetch_array($result2);
echo mysqli_num_rows($result2);
if(!mysqli_num_rows($result2)){
header("Location: index.php");
exit;
}
$date_title=$date;
$date_begin =$date;
$date++;
$date_end=$date;
$date_begin=$date_begin.'-00';
$date_end=$date_end.'-00';
?>
在向页面输出任何内容后，不能使用标头进行重定向。使用类似这样的东西来替代javascript替代方案：
else {
echo("<script>location.href = 'www.myurlhere.com';</script>");
}
<?php
if(!isset($_GET["date"])){
header("Location: http://newsite");
}
$date=$_GET["date"];
?>
正如macroman所指出的，只有当它位于页面的最顶部，在第一个或echo之前时，这才有效。