PHP+JS實現(xiàn)文件分塊上傳的示例代碼

第PHP+JS實現(xiàn)文件分塊上傳的示例代碼}else{

progressText=(Math.min(100,(blob_num/total_blob_num)*100)).toFixed(2)+'%';

varprogress=document.getElementById('progress');

progress.innerHTML=progressText;

//循環(huán)執(zhí)行上傳，直到所有文件塊上傳完成

vart=setTimeout(function(){

if(startfile.sizeis_stop==0){

blob=cutFile(file);

uploadFile(blob,file);

blob_num+=1;

}else{

//所有文件塊上傳完成

},1000);

xhr.send(form_data);

//每次文件塊上傳后，清空上傳信息

form_data="";

}

PHP

上傳類

classUpload

*@varstring上傳目錄

private$filepath='./upload';//上傳目錄

*@varstring塊文件臨時存儲的位置

private$tmpPath;

*@varinteger第幾個文件塊

private$blobNum;

*@varinteger//文件塊總數(shù)

private$totalBlobNum;

*@varstring上傳文件名

private$fileName;

publicfunction__construct($tmpPath,$blobNum,$totalBlobNum,$fileName,$filepath=''){

if(!empty($filepath)){

$this-filepath=$filepath;

$this-tmpPath=$tmpPath;

$this-blobNum=$blobNum;

$this-totalBlobNum=$totalBlobNum;

$this-fileName=$fileName;

//保存文件塊

$this-moveFile();

//保存文件

$this-fileMerge();

privatefunctionfileMerge(){

//當文件塊都上傳后將文件塊整合成文件

if($this-blobNum==$this-totalBlobNum){

for($i=1;$i=$this-totalBlobNum;$i++){

$blob='';

$blob=file_get_contents($this-filepath.'/'.$this-fileName.'__'.$i);

file_put_contents($this-filepath.'/'.$this-fileName,$blob,FILE_APPEND);

unset($blob);

//刪除文件塊

$this-deleteFileBlob();

//刪除文件塊

privatefunctiondeleteFileBlob(){

for($i=1;$i=$this-totalBlobNum;$i++){

@unlink($this-filepath.'/'.$this-fileName.'__'.$i);

privatefunctionmoveFile(){

$this-touchDir();

$filename=$this-filepath.'/'.$this-fileName.'__'.$this-blobNum;

//保存文件塊

move_uploaded_file($this-tmpPath,$filename);

//上傳返回

publicfunctionuploadReturn(){

if($this-blobNum==$this-totalBlobNum){

if(file_exists($this-filepath.'/'.$this-fileName)){

return[

'code'=2,

'message'='success',

'file_path'='http://'.$_SERVER['HTTP_HOST'].str_replace('.','',$this-filepath).'/'.$this-fileName,

'local_path'=str_replace('.','',$this-filepath).'/'.$this-fileName

return[

'code'=1,

'message'='waiting',

*創(chuàng)建目錄

privatefunctiontouchDir(){

if(!file_exists($this-filepath)){

returnmkdir($this-filepath);

}

調(diào)用上傳類

$tmpName=$_FILES['file']['tmp_name'];

$blobNum=$_POST['blob_num'];

$totalBlobNum=$_POST['total_blob_num'];

$fileName=$_POST['file_name'];

$upload=newUpload($tmpName,$blobNum,$totalBlobNum,$fil