我正在尝试在php ajax中创建一个简单的文件上传进度条。这是我的代码。问题是进度条工作正常，但只要我包括
class ="userImage"
in
<input type = "file" name = "files" class ="userImage" >
它显示进度条百分比，但不会将文件上传到该位置。此外，如果我删除它，文件上传到该位置罚款，但进度条不显示百分比。我无法弄清问题是什么。这是我的代码。
<?php
session_start();
$public_path = '/public_repository';
$user_file_path_public = $_SESSION['loggedInEmail'].'/'.$public_path;
$user_id = $_SESSION['uid'];
include('db.php');
?>
<?php
function readableSize($size){
if($size >= 1073741824){
$fileSize = round($size / 1024 / 1024 / 1024, 1). ' gb';
}else if($size >= 1048576){
$fileSize = round($size / 1024 /1024, 1). ' mb';
}else if($size >= 1024){
$fileSize = round($size / 1024, 1). ' kb';
}else{
$fileSize = $size. ' bytes';
}
return $fileSize;
}
?>
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<html>
<head>
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<meta name="viewport" content="width=device-width,initial-scale=1" />
<link rel="stylesheet" type="text/css" href="style.css"/>
<style>
#progress-bar {background-color: #12CC1A;height:20px;color: #FFFFFF;width:0%;-webkit-transition: width .2s;-moz-transition: width .1s;transition: width .2s;}
#progress-div {border:#0FA015 1px solid;padding: 5px 0px;margin:30px 0px;border-radius:4px;text-align:center;}
</style>
<script>
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</script>
<script type="text/javascript">
$(document).ready(function() {
$('#uploadForm').submit(function(e) {
if($('.userImage').val()) {
e.preventDefault();
$(this).ajaxSubmit({
target: '#targetLayer',
beforeSubmit: function() {
$("#progress-bar").width('0%');
},
uploadProgress: function (event, position, total, percentComplete){
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$("#progress-bar").html('<div id="progress-status">' + percentComplete +' %</div>')
},
success:function (){
},
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});
return false;
}
});
});
</script>
</head>
<body>
<form id="uploadForm" action = "<?php echo $_SERVER['PHP_SELF'];?>" method="POST" enctype="multipart/form-data">
Select File :
<input type = "file" name = "files" class ="userImage" ><br /><p/>
<input class="upload_public_button" type = "submit" value = "Upload" name = "upload_submit">
<div id="progress-div"><div id="progress-bar"></div></div>
</form>
</ul>
<?php
if(isset($_POST['upload_submit']) && $_POST['upload_submit'] == 'Upload') {
$tmp_file = $_FILES['files']['tmp_name'];
$user_file_name = $_FILES['files']['name'];
$raw_public_filesize =$_FILES['files']['size'];
$user_file_size = readableSize($raw_public_filesize);
$user_file_type = $_FILES['files']['type'];
if(move_uploaded_file($tmp_file, $user_file_path_public.'/'.$user_file_name)) {
echo 'success';
}
}
?>
</body>
</html>