如何让我的简单视图的html项目在表单POST后重新出现？
我在下面布置了html控件，然后当用户选择"上传"提交按钮，文件已上传（成功），但全部先前布置的视图元素消失。再次，上传文件的操作正常。只是我显示的html控件在index.php上，当表单上传到浏览器窗口时就会消失为空。
如何在表单的POST之后返回我的简单视图？
THIS index.php:
<body>
<img src="/theWebsite/images/banner2.jpg" /img>
<br />
<input type="button" value="Play" onclick="showAnAlert(){}" />
// other buttons and text field html elements not shown
<form enctype="multipart/form-data" action="file-upload.php" method="POST">
Please choose a file: <input name="uploaded" type="file" /><br />
<input type="submit" value="Upload" />
</form>
</body>
这里是文件上传.php：
<?php
$target = "upload/";
$target = $target . basename( $_FILES['uploaded']['name']) ;
$uploadingFile = $_FILES['uploaded']['tmp_name'] ;
if(move_uploaded_file($_FILES['uploaded']['tmp_name'], $target))
{
// I thought the problem was this 'echo' but the main view still goes blank after
// I commented this out here....
//echo "The file ". basename( $_FILES['uploaded']['name']). " has been uploaded";
}
else {
// echo "errmsg"
}
?>
将表单发布到file-upload.php后，不会将其重定向回HTML所在的index.php。您需要在完成表单处理后调用重定向：
if(move_uploaded_file($_FILES['uploaded']['tmp_name'], $target))
{
// I thought the problem was this 'echo' but the main view still goes blank after
// I commented this out here....
//echo "The file ". basename( $_FILES['uploaded']['name']). " has been uploaded";
// Redirect back....
header("Location: http://www.example.com/index.php");
// Always call exit() right after a redirection header to prevent further script execution.
exit();
}
else {
// echo "errmsg"
}
您可能还需要在出现错误的情况下重定向。在这种情况下，将header()调用放在最后。
file-upload.php文件需要在上传完成后将用户重定向回您的index.php，或者需要在底部包含原始的index.php文件。
我建议您要么重定向回，要么简单地将file-upload.php文件全部删除，并在index.php文件中处理它。
对于表单的操作，指定$_SERVER['PP_SELF']变量：
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="POST">
然后一定要在为表单输出html的同一个.php文件中添加处理表单的逻辑。另一种方法是使用header（）调用再次重定向到表单：
<form action="process_form.php" method="POST">
然后，在process_form.php中：
header("Location: http://mydomain.com/form_page.html");