这篇文章主要为大家详细介绍了php分片上传简单示例，具有一定的参考价值，可以用来参考一下。

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/**

*

* @param

* @arrange (512.笔记) www.512pic.com

**/

class Upload{

private $filepath = './upload'; //上传目录

private $tmpPath; //PHP文件临时目录

private $blobNum; //第几个文件块

private $totalBlobNum; //文件块总数

private $fileName; //文件名

private $md5FileName;

public function __construct($tmpPath,$blobNum,$totalBlobNum,$fileName, $md5FileName){

$this->tmpPath = $tmpPath;

$this->blobNum = $blobNum;

$this->totalBlobNum = $totalBlobNum;

$this->fileName = $this->createName($fileName, $md5FileName);

$this->moveFile();

$this->fileMerge();

}

//判断是否是最后一块，如果是则进行文件合成并且删除文件块

private function fileMerge(){

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

$blob = '';

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

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

}

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

$this->deleteFileBlob();

}

}

//删除文件块

private function deleteFileBlob(){

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

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

}

}

private function moveFile(){

$this->touchDir();

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

move_uploaded_file($this->tmpPath,$filename);

}

//API返回数据

public function apiReturn(){

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

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

$data['code'] = 2;

$data['msg'] = 'success';

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

}

}else{

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

$data['code'] = 1;

$data['msg'] = 'waiting';

$data['file_path'] = '';

}

}

header('Content-type: application/json');

echo json_encode($data);

}

private function touchDir(){

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

return mkdir($this->filepath);

}

}

private function createName($fileName, $md5FileName){

return $md5FileName . '.' . pathinfo($fileName)['extension'];

}

}

$upload = new Upload($_FILES['file']['tmp_name'],$_POST['blob_num'],$_POST['total_blob_num'],$_POST['file_name'],$_POST['md5_file_name']);

$upload->apiReturn();

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