PHP编程：ThinkPHP结合AjaxFileUploader实现无刷新文件上传的方

<?php
class upAction extends BaseAction{
public function index(){
??? $this->display();
}
?
/*
*@文件上传
*@author??? FineYi
*@date??????? 2013-01-23
*/
public function upLoadFile(){
??? $error = "";
??? $msg = "";
??? $fileElementName = 'fileToUpload';
??? if(!empty($_FILES[$fileElementName]['error'])){
??????? switch($_FILES[$fileElementName]['error']){
??????????? case '1':
??????????????? $error = 'The uploaded file exceeds the upload_max_filesize directive in php.ini';
??????????????? break;
??????????? case '2':
??????????????? $error = 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form';
??????????????? break;
??????????? case '3':
??????????????? $error = 'The uploaded file was only partially uploaded';
??????????????? break;
??????????? case '4':
??????????????? $error = 'No file was uploaded.';
??????????????? break;
?
??????????? case '6':
??????????????? $error = 'Missing a temporary folder';
??????????????? break;
??????????? case '7':
??????????????? $error = 'Failed to write file to disk';
??????????????? break;
??????????? case '8':
??????????????? $error = 'File upload stopped by extension';
??????????????? break;
??????????? case '999':
??????????? default:
??????????????? $error = 'No error code avaiable';
??????? }
??? }elseif(empty($_FILES['fileToUpload']['tmp_name']) || $_FILES['fileToUpload']['tmp_name'] == 'none'){
??????? $error = 'No file was uploaded..';
??? }else{
??????????? $re = $this->up();
??????????? if(!$re){
??????????????? $error = 'Up file fail';
??????????? }
??????????? $msg = $re['savename'];??? //文件名
??????????? $path = '/upload/bizcoop/'.$msg;??? //文件路径
??????????? $size = $re['size'];??? //文件大小
??? }???????
??? echo json_encode(array('error'=>$error,'msg'=>$msg,'path'=>$path,'size'=>$size));exit;
}
?
private function up(){
??? import('@.Org.UploadFile');//将上传类UploadFile.class.php拷到Lib/Org文件夹下
??? $upload=new UploadFile();
?
??? $upload->maxSize='-1';//默认为-1,不限制上传大小
??? $upload->savePath= ICTSPACE_DIST_ROOT_PATH.'/www/upload/bizcoop/';//保存路径
??? $upload->saveRule=uniqid;//上传文件的文件名保存规则
??? $upload->uploadReplace=true;//如果存在同名文件是否进行覆盖
??? $upload->allowExts=array('jpg','jpeg','png','gif');//准许上传的文件类型
??? if($upload->upload()){
??????? $info=$upload->getUploadFileInfo();
??????? return $info[0];
??? }else{
??????? return false;
??????? exit;
??? }
}
}
?>

<div id="content">
<h1>Ajax File Upload Demo</h1>
<img id="loading" style="display: none;" alt="" src="__APP____PUBLIC__/style/img/loading.gif" />
?
<form action="" enctype="multipart/form-data" method="POST" name="form">
<table class="tableForm" cellspacing="0" cellpadding="0">
<thead>
<tr>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td><input class="input" id="fileToUpload" type="file" name="fileToUpload" size="45" /></td>
</tr>
<tr>
<td><button class="button" id="buttonUpload" onclick="return ajaxFileUpload();">Upload</button></td>
</tr>
</tbody>
<tbody>
<tr>
<td><span>已上传的附件:</span></td>
</tr>
</tbody>
<tfoot></tfoot>
</table>
</form></div>