PHP Html5上传大文件

<form id="upload_form" name="upload_form" action="javascript:init();"
method="post" enctype="multipart/form-data">
<div>
<label for="file">
请选择文件
</label>
 上传到的地址为http://bi.xiaoyou-game.com/upload/类型/文件名
</div>
<div>
<input type="file" id="file" name="file" onchange="fileReady()">
<div>
<input type="submit" id="submit" name="submit" value="上传">
<button id="clear" onclick="clearUploadFile()">
清除
</button>
<div class="upload_message_show">
<!--进度条-->
<div class="upload_bar_box">
<div class="upload_bar">
</div>
<span class="upload_percent">
</span>
</div>
<!--上传剩余时间和上传速度-->
<div class="upload_count">
<div class="left_time">
剩余时间 | 00:00:00
</div>
<div class="speed">
100k/s
</div>
</div>
<!--文件信息-->
<div class="upload_file_message">
<div class="message_box">
<div class="upload_file_name">
</div>
<div class="upload_file_size">
</div>
<div class="upload_file_type">
</div>
<div class="upload_file_error">
</div>
<div class="isCompleted">
</div>
</div>
<!-- <div class="upload_file_preview"></div> -->
</div>
</div>
</form>
</div>
<img src="" id="compressTemp" style="display:none;">
<canvas id="canvas" style="display:none;">
</canvas>
<script type="text/javascript" src="http://bi.xiaoyou-game.com/static/js/html5_upload_ano.js">
</script>

var nSlice_count = 200,//分段数
nFactCount,           //实际分段数
nMin_size      = 0.5,//最小分段大小(M)
nMax_size     = 5,  //最大分段大小(M)
nFactSize,           //实际分段大小
nCountNum     = 0,  //分段标号
sFile_type,           //文件类型
nFile_load_size,   //文件上传部分大小
nFile_size,           //文件大小
nPreuploaded = 0,  //上一次记录上传部分的大小
bIs_uploading= false,//是否上传中
bStart_upload= false,//是否开始上传
bEnd_upload  = false;//是否上传完成

function init(){
var $con = document.getElementById("submit").value;

bStart_upload = ($con=="上传"?true:false);
if(bStart_upload)
{
if(!bEnd_upload)
document.getElementById("submit").value = "暂停";
}
else
{
clearTimeout('timer');
document.getElementById("submit").value = "上传";
}
if(!bEnd_upload && bStart_upload)
startUpload();
}

function startUpload(){
var form = document.forms["upload_form"];
if(form["file"].files.length<=0)
{
alert("请先选择文件，然后再点击上传");
return;
}

var file = form["file"].files[0];

var get_file_message = (function(){

var get_message = {
get_name:function(){
return file.name;
},
get_type:function(){
return file.type;

},
get_size:function(){
return file.size;
},
getAll:function(){
return {
fileName : this.get_name(),
fileSize : this.get_size(),
fileType : this.get_type()
}
}
};
return get_message;
})();

var conversion = (function(){
var unitConversion = {
bytesTosize:function(data){
var unit = ["Bytes","KB","MB","GB"];
var i = parseInt(Math.log(data)/Math.log(1024));
return (data/Math.pow(1024,i)).toFixed(1) + " " + unit[i];
},
secondsTotime:function(sec){
var h = Math.floor(sec/3600),
m = Math.floor((sec-h*3600)/60),
s = Math.floor(sec-h*3600-m*60);
if(h<10) h = "0" + h;
if(m<10) m = "0" + m;
if(s<10) s = "0" + s;

return h + ":" + m + ":" + s + ":";
}
};

return unitConversion;
})();

//start sending
var reader = new FileReader();
var timer;

var fProgress = function(e){
var fSize = get_file_message.getAll().fileSize;
timer = setTimeout(uploadCount(e,fSize,conversion),300);
};

var floadend = function(e){
if(reader.error){alert("上传失败,出现未知错误");clearTimeout(timer);return;}
clearTimeout(timer);
if(nCountNum+1!=nFactCount)
{
if(bStart_upload)
{
nCountNum++;
uploadStart();
return;
} else {
document.querySelector(".speed").innerHTML = "0k/s";
document.querySelector(".left_time").innerHTML = "剩余时间 | 00:00:00";
return;
}
}

bEnd_upload = true;
document.querySelector(".speed").innerHTML = "0k/s";
document.querySelector(".left_time").innerHTML = "剩余时间 | 00:00:00";
document.querySelector(".upload_percent").innerHTML = "100.00%";
document.getElementById("submit").value = "上传";
document.querySelector(".upload_bar").style.width = "100%";

var $res = JSON.parse(e.target.responseText);
filePreview($res);
if($res.res=="success") {
bIs_uploading =true;
document.querySelector("#package_url").value=$res.package_url;
}
document.querySelector(".isCompleted").innerHTML="上传状态: " + (bIs_uploading?"上传完成":"正在上传..");
};

var uploadStart = function(){
var get_all = get_file_message.getAll();
var start = nCountNum * nFactSize,
end   = Math.min(start+nFactSize,get_all.fileSize);

var fData = new FormData();

fData.append("file",file.slice(start,end));
fData.append("name",file.name);
fData.append("size",file.size);
fData.append("type",file.type);
fData.append("totalCount",nFactCount);
fData.append("indexCount",nCountNum);

//fData.append("crc32",CRC32(file.size));

fData.append("trueName",file.name.substring(0,file.name.lastIndexOf(".")));

if(!sFile_type)
sFile_type = file.type.substring(0,file.type.indexOf("/"));
var xhr = new XMLHttpRequest();
xhr.upload.addEventListener("progress",fProgress,false);
xhr.addEventListener("load",floadend,false);
xhr.addEventListener("error",errorUp,false);
xhr.addEventListener("abort",abortUp,false);

xhr.open("POST","http://bi.xiaoyou-game.com/class/function/");  //后台php路径
xhr.send(fData);
};

reader.onloadstart = function(){
var get_all = get_file_message.getAll(),
fName = get_all.fileName,
fType = get_all.fileType,
fSize = conversion.bytesTosize(get_all.fileSize);

document.querySelector(".upload_message_show").style.display = "block";
document.querySelector(".upload_file_name").innerHTML ="文件名称: " + fName;
document.querySelector(".upload_file_type").innerHTML ="文件类型: " + fType;
document.querySelector(".upload_file_size").innerHTML ="文件大小: " + fSize;
document.querySelector(".isCompleted").innerHTML       ="上传状态: " + (bIs_uploading?"完成":"正在上传中..");

nFactSize = Math.floor(get_all.fileSize/nSlice_count);
nFactSize = (nFactSize>=nMin_size*1024*1024?nFactSize:nMin_size*1024*1024);
nFactSize = (nFactSize<=nMax_size*1024*1024?nFactSize:nMax_size*1024*1024);
nFactCount= Math.ceil(get_all.fileSize/nFactSize);

uploadStart();
};

reader.readAsBinaryString(file);
}

function uploadCount(e,fSize,conversion){
var upSize = e.loaded+nCountNum*nFactSize,
perc = (upSize*100/fSize).toFixed(2) + "%";
var speed = Math.abs(upSize - nPreuploaded);
if(speed==0){clearTimeout("timer");return;}
var leftTime = conversion.secondsTotime(Math.round((fSize-upSize)/speed));
speed = conversion.bytesTosize(speed)+"/s";
document.querySelector(".speed").innerHTML = speed;
document.querySelector(".left_time").innerHTML = "剩余时间 | " + leftTime;
document.querySelector(".upload_percent").innerHTML = perc;
document.querySelector(".upload_bar").style.width = perc;
nPreuploaded = upSize;
}

function messageChange(){
document.querySelector(".upload_file_name").innerHTML ="文件名称: " ;
document.querySelector(".upload_file_type").innerHTML ="文件类型: " ;
document.querySelector(".upload_file_size").innerHTML ="文件大小: " ;
document.querySelector(".isCompleted").innerHTML       ="上传状态: " ;
document.querySelector(".upload_bar").style.width = "0%";
document.querySelector(".upload_percent").innerHTML = "0%";
//document.querySelector(".upload_file_preview").innerHTML ="";
document.querySelector(".upload_message_show").style.display = "none";
}

function clearUploadFile(){
var e = e || event;
e.stopPropagation();
e.preventDefault();
document.getElementById("file").value = "";
bStart_upload = false;
messageChange();
}

function fileReady(){
bIs_uploading = false;
bEnd_upload = false;
nCountNum = 0;
bStart_upload = false;
messageChange();
}

function errorUp(){
bStart_upload = false;
document.querySelector(".upload_file_error").innerHTML = "上传过程中出错";
}

function abortUp(){
bStart_upload = false;
document.querySelector(".upload_file_error").innerHTML = "网络故障，请检查重试";
}

function filePreview($src){
var ftype = sFile_type;
var $temp;
var IMGMaxHeight = document.querySelector(".upload_message_show").offsetHeight;
switch(ftype){
case "image" :
$temp = '<img src="source/'+$src.url+'" style="max-height:'+IMGMaxHeight+'px;margin-left:30%;">';
break;
case "audio" :
$temp = '<audio src="source/'+$src.url+'" controls="controls"></audio>';
break;
case "video" :
$temp = '<video src="source/'+$src.url+'" controls="controls"></video>';
break;
case "rar":
$temp = '<span>rar文件；</span>';
case "zip":
$temp = '<span>zip文件</span>';
}
/*

if(IsPreview)
document.querySelector(".upload_file_preview").innerHTML = $temp;*/
}

public function do_upload()
{

$fsize = $_POST['size'];
$findex =$_POST['indexCount'];
$ftotal =$_POST['totalCount'];
$ftype = $_POST['type'];
$fdata = $_FILES['file'];
$fname = mb_convert_encoding($_POST['name'],"gbk","utf-8");
$type = end(explode(".",$fname));
$allowed_type = array('apk','ipa','jpg','png','gif');
if( !in_array($type,$allowed_type)){
echo json_encode(array('res' => 'fail'));
exit;
}

$truename = mb_convert_encoding($_POST['trueName'],"gbk","utf-8");

$dir = PACKAGE_URL . $type ; //PACKAGE_URL为绝对路径，/var/www/....

$save = $dir."/".$fname;
if(!is_dir($dir))
{
mkdir($dir);
chmod($dir,0777);//给文件夹以写的权限
}

//读取临时文件内容
$temp = fopen($fdata["tmp_name"],"r+");//打开
$filedata = fread($temp,filesize($fdata["tmp_name"]));//读取文件

//将分段内容存放到新建的临时文件里面
if(file_exists($dir."/".$findex.".tmp")) unlink($dir."/".$findex.".tmp");//是否存在当前的临时片名
$tempFile = fopen($dir."/".$findex.".tmp","w+");//打开

fwrite($tempFile,$filedata);//写入
fclose($tempFile);//关闭

fclose($temp);

if($findex+1==$ftotal)
{
if(file_exists($save)) @unlink($save);
//循环读取临时文件并将其合并置入新文件里面
for($i=0;$i<$ftotal;$i++)
{
$readData = fopen($dir."/".$i.".tmp","r+");
$writeData = fread($readData,filesize($dir."/".$i.".tmp"));//读取文件

$newFile = fopen($save,"a+");
fwrite($newFile,$writeData);

fclose($newFile);

fclose($readData);

$resu = @unlink($dir."/".$i.".tmp");
}
$fnewszie = filesize($dir."/".$fname);

if($fsize==$fnewszie)
{
$test = "succe";
}else{
$test = "fail";
}

$res = array("res"=>"success","test"=>$test,"fsize"=>$fsize,"newsize"=>$fnewszie,"url"=>mb_convert_encoding($truename."-".$fsize."/".$fname,'utf-8','gbk'),"package_url"=>'http://bi.xiaoyou-game.com/upload/'.$type.'/'.$fname);

echo json_encode($res);
}
}