嗨，我需要创建文件下载。
用于下载和表单验证的填写表单以及 dB 插入都在同一页中。 如果表单已提交，则需要使用另存为窗口自动触发文件下载。我把代码写成：
if(isset($_POST['submit'])){
$u=$_POST['uname'];
/*similarly getting all posted data*/
echo '<br><b>'.JText::_( 'Thank you for submitting your details...' ).'</b>';
$db =& JFactory::getDBO();
$query = "/*db inserting query*/";
$db->setQuery( $query );
$db->query();
$filee= basename($path); /*$path contains value form $_POST*/
$full='http://localhost/joomla/images/uploads/'.$filee;
?>
<br><b>
<span>If the download does not start automatically in a few seconds, <a href="<?php echo JURI::base(); ?>/images/myfile/<?php echo $filee;?>" target="_blank"><b> Click this link</b></a></span></b>
<?php
header('Content-Description:File Transfer');
header("Content-type:application/pdf");
header("Content-type:application/zip");
header("Content-type:image/jpeg");
header("Content-type:image/png");
header("Content-type:application/msword");
header("Content-Disposition: attachment; filename=".$filee."");
header("Cache-control: private");
readfile($full);
}
else{ code for printing fill up form}
我需要打印"感谢您提交.."。等消息在下载之前，但是现在当我提交填写表格下载时，下载开始不显示上述文本。等待一段时间后，我应该怎么做才能进行下载？
你可以在 php 中使用sleep()来延迟执行。所以试试这样
if(isset($_POST['submit'])){
$u=$_POST['uname'];
echo '<br><b>'.JText::_( 'Thank you for submitting your details...' ).'</b>';
$db =& JFactory::getDBO();
$query = "/*db inserting query*/";
$db->setQuery( $query );
$db->query();
$filee= basename($path); /*$path contains value form $_POST*/
$full='http://localhost/joomla/images/uploads/'.$filee;
?>
<br><b>
<span>If the download does not start automatically in a few seconds, <a href="<?php echo JURI::base(); ?>/images/myfile/<?php echo $filee;?>" target="_blank"><b> Click this link</b></a></span></b>
<?php
sleep(10);//Will delay for 10 seconds
header('Content-Description:File Transfer');
header("Content-type:application/pdf");
header("Content-type:application/zip");
header("Content-type:image/jpeg");
header("Content-type:image/png");
header("Content-type:application/msword");
header("Content-Disposition: attachment; filename=".$filee."");
header("Cache-control: private");
readfile($full);
}
else{ code for printing fill up form}