尝试取消上传时，我的取消按钮出现问题，我需要一些帮助来可能会稍微改变我的代码设计。
问题：
在“audioupload.php”脚本运行之前，“canceaudio.php”页面没有它需要的信息。这是一个马车和马的情况。如果客户端在 HTTP 请求期间单击取消按钮，“audioupload.php”脚本（在服务器端）永远不会被执行。然而，jQuery 中的客户端活动仍然会运行。
我想要实现的解决方案：
客户端填写表单并提交，生成一个 POST 请求，并附上文件。POST 请求可能需要几秒钟才能完成，具体取决于文件大小、连接速度等。
只有在所有文件的 HTTP 上传完成后，PHP 才能获得控制权。服务器上的 PHP“动作”脚本通过 POST 方法请求获得控制。如果在上传过程中发生任何错误，$_FILES['error'] 将加载正确的代码。此时您可以检查 $_FILES 中的值、move_uploaded_file()、将文件名加载到 $_SESSION 数组等。
综上所述，如果人类客户端在 POST 请求正在进行时（或在开始上传之前）单击“取消按钮”，这会导致文件上传被取消，则处理上传的 PHP“动作”脚本永远不会得到控制。服务器永远没有机会移动上传的文件并将变量加载到数据库或会话数组中。
我只需要帮助对问题进行编码即可找到解决方案。有人可以帮忙吗？以下是必要的代码：
音频上传.PHP
<?php
ini_set('display_errors',1);
error_reporting(E_ALL);
// connect to the database
include('connect.php');
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
die();
}
$result = 0;
if( file_exists("AudioFiles/".$_FILES['fileAudio']['name'])) {
$parts = explode(".",$_FILES['fileAudio']['name']);
$ext = array_pop($parts);
$base = implode(".",$parts);
$n = 2;
while( file_exists("AudioFiles/".$base."_".$n.".".$ext)) $n++;
$_FILES['fileAudio']['name'] = $base."_".$n.".".$ext;
move_uploaded_file($_FILES["fileAudio"]["tmp_name"],
"AudioFiles/" . $_FILES["fileAudio"]["name"]);
$result = 1;
}
else
{
move_uploaded_file($_FILES["fileAudio"]["tmp_name"],
"AudioFiles/" . $_FILES["fileAudio"]["name"]);
$result = 1;
}
$audiosql = "INSERT INTO Audio (AudioFile)
VALUES (?)";
if (!$insert = $mysqli->prepare($audiosql)) {
// Handle errors with prepare operation here
}
//Dont pass data directly to bind_param store it in a variable
$insert->bind_param("s",$aud);
//Assign the variable
$aud = 'AudioFiles/'.$_FILES['fileAudio']['name'];
$insert->execute();
if ($insert->errno) {
// Handle query error here
}
$insert->close();
$lastAudioID = $mysqli->insert_id;
$_SESSION['lastAudioID'] = $lastAudioID;
$_SESSION['AudioFile'] = $_FILES["fileAudio"]["name"];
$audioquestionsql = "INSERT INTO Audio_Question (AudioId, QuestionId)
VALUES (?, ?)";
if (!$insertaudioquestion = $mysqli->prepare($audioquestionsql)) {
// Handle errors with prepare operation here
echo "Prepare statement err audioquestion";
}
$qnum = (int)$_POST['numaudio'];
$insertaudioquestion->bind_param("ii",$lastAudioID, $qnum);
$insertaudioquestion->execute();
if ($insertaudioquestion->errno) {
// Handle query error here
}
$insertaudioquestion->close();
?>
取消音频.PHP
<?php
// connect to the database
include('connect.php');
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
die();
}
unlink("AudioFiles/" . $_SESSION['AudioFile']);
$delete = $mysqli->prepare('DELETE FROM Audio WHERE AudioId = ?');
$delete->bind_param("i",$_SESSION['lastAudioID']);
$delete->execute();
$deleteaud = $mysqli->prepare('DELETE FROM Audio_Question WHERE AudioId = ?');
$deleteaud->bind_param("i",$_SESSION['lastAudioID']);
$deleteaud->execute();
?>
HTML 表单代码：
<form action='audioupload.php' method='post' enctype='multipart/form-data' target='upload_target_audio' onsubmit='return audioClickHandler(this);' class='audiouploadform' >
Audio File: <input name='fileAudio' type='file' class='fileAudio' /></label><br/><br/><label class='audiolbl'>
<input type='submit' name='submitAudioBtn' class='sbtnaudio' value='Upload' /></label>
<input type='hidden' class='numaudio' name='numaudio' value='" + GetFormAudioCount() + "' />
<input type='reset' name='audioCancel' class='audioCancel' value='Cancel' /></label>
<iframe class='upload_target_audio' name='upload_target_audio' src='#' style='width:300px;height:300px;border:0px;solid;#fff;'></iframe></form>
查询代码：
function startAudioUpload(audiouploadform){
$(audiouploadform).find('.audiof1_upload_process').css('visibility','visible');
$(audiouploadform).find('.audiof1_cancel').css('visibility','visible');
$(audiouploadform).find('.audiof1_upload_form').css('visibility','hidden');
sourceAudioForm = audiouploadform;
$(audiouploadform).find(".audioCancel").on("click", function(event) {
$('.upload_target_audio').get(0).contentwindow
$("iframe[name='upload_target_audio']").attr("src", "cancelaudio.php");
return stopAudioUpload(2);
});
return true;
}