PHP uses the APC module to implement a large file upload progress bar,

PHP uses the APC module to implement a progress bar for large file uploads.

php Uploading large files with progress has always been a problem that troubles PHP programmers. Query Baidu and Google, and the general methods for uploading with progress are: flash php, socket, apc php, etc. Below I introduce the uploading with progress made by apc php ajax, and post the source code. I hope it will be helpful to Useful to everyone. Alternative PHP Cache (APC) is a free and public optimized code cache for PHP. It is used to provide a free, open and robust framework for caching and optimizing PHP intermediate code.

When using apc, you must first install the apc module.

Step one: Download php_apc.dll

Step 2: Make php.ini support apc extension module.
Put php_apc.dll into your ext directory, then open php.ini and add:
extension=php_apc.dll apc.rfc1867 = on
apc.max_file_size = 100M
upload_max_filesize = 100M
Post_max_size = 100M

//The above parameters can be defined by yourself

Step 3: Check whether PHP APC is supported

 if (function_exists('apc_fetch')) {
 echo 'it surpport apc model!';
 } else {
 echo "it's not support apc model!";
 }
 &#63;>

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Let’s get to the point:
Principle: Through the APC module, use ajas to read the upload progress from the cache. For details, see:
index.php

<&#63;php
 $unid=uniqid("");//确定唯一标致，实现多人同时上传
&#63;>
<div class="userinput2">
 <div id="captions">先将你要上传的软件上传服务器，上传时请耐心等候...<span class="style1"><br />
 </span>
 <script type="text/javascript" >
  var xmlHttp;
 var proNum=0;
 var loop=0;
 //初始化xmlHttp
 function createxml(){
 var xmlHttp;
 if(window.XMLHttpRequest){
 xmlHttp=new XMLHttpRequest();
 }else{
 xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
 }
 return xmlHttp;
 }
 xmlHttp=createxml();
 //ajas操作
 function sendURL() {
  var url="getprogress.php&#63;progress_key=<&#63;php echo $unid;&#63;>";
  xmlHttp.open("GET",url,false);
  if (window.navigator.userAgent.indexOf("Firefox")>=1){
  //如果是firefox3.0
  xmlHttp.send("progress_key=<&#63;php echo $unid;&#63;>");
  if(xmlHttp.status==200) doHttpReadyStateChange();
 
  }else{
  xmlHttp.onreadystatechange = doHttpReadyStateChange;
  xmlHttp.send("progress_key=<&#63;php echo $unid;&#63;>");
  }
 }
 //回调函数
 function doHttpReadyStateChange() {
  if (xmlHttp.readyState== 4){
  proNum=parseInt(xmlHttp.responseText);
  //alert(proNum);
  document.getElementByIdx_x("progressinner").style.width = proNum+"%";
  document.getElementByIdx_x("showNum").innerHTML = proNum+"%";
  if ( proNum < 100){
  setTimeout("sendURL()", 200);
  }else{
  //上传成功后，还不能及时得到信息。还希望高人指点
  document.getElementByIdx_x("progressouter").style.display="none";
  document.getElementByIdx_x("progressinner").style.display="none";
  document.getElementByIdx_x("showNum").style.display="none";
  document.getElementByIdx_x("theframe").style.display="none";
  document.getElementByIdx_x("link2").style.display="block";
  }
 
  }
 }
 function startProgress(){
  document.getElementByIdx_x("progressouter").style.display="block";
  setTimeout("sendURL()", 200);
 }
 function newsofturl(text){
  document.getElementByIdx_x("link2").style.display="block";
  document.getElementByIdx_x("link2").value=text;
 }
 </script>
 <iframe id="theframe" name="theframe" src="softupload.php&#63;id=<&#63;php echo($unid); &#63;>" style="border: 0; height: 80px; width: 400px; " frameborder="0" scrolling="no" > </iframe>
 <input name="linkdefult" type="hidden" id="linkdefult" value="0" />
 <br />
 <div id="link2" style="display:none;" > <font size=2>上传成功!    文件大小为：
  <input type="text" name="filesize" id="filesize" style="width:50px;"/>
  </font><br>
  <br>
  <font size=2>文件下载地址为：</font><br />
  <input type=text name='link' id='link' style='width:380px;' />
 </div>
 <br/>
 <div id="progressouter" style="width: 500px; height: 20px; border: 1px solid #000000; display:none;">
  <div id="progressinner" style="position: relative; height: 20px; background-color: #333333; width: 0%; "></div>
 </div>
 <div id='showNum' style="font-size:12px; color:#333333"></div>
 </div>
</div>

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softupload.php

<&#63;php
 $id = $_GET['id'];
&#63;>
<script language="javascript">
//Trim the input text
function Trim(input)
{
 var lre = /^\s*/;
 var rre = /\s*$/;
 input = input.replace(lre, "");
 input = input.replace(rre, "");
 return input;
 }
function CheckForTestFile()
 {
  var file = document.getElementByIdx_x('Softfile');
  var fileName=file.value; 
  //Checking for file browsed or not
  if (Trim(fileName) =='' )
  {
  alert("请为上传选择一个文件!!!");
  file.focus();
  return false;
  }
 //Setting the extension array for diff. type of text files
 var extArray = new Array(".rar", ".zip", ".exe", ".gz"); 
 //getting the file name
 while (fileName.indexOf("\") != -1)
  fileName = fileName.slice(fileName.indexOf("\") + 1);

 //Getting the file extension   
 var ext = fileName.slice(fileName.indexOf(".")).toLowerCase();
 for (var i = 0; i < extArray.length; i++)
 {
  if (extArray[i] == ext)
  {
  window.parent.startProgress(); return true;
  }
 }
  alert("正确的文件格式为" + (extArray.join(" ")) + "\n请选择一个新的 " + "文件提交上传.");
  file.focus();
  return false;  
 } 
</script> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<form enctype="multipart/form-data" id="upload_form" action="target.php" method="POST">
<input type="hidden" name="APC_UPLOAD_PROGRESS" id="progress_key" value="<&#63;php echo $id&#63;>"/>
<table width="322" border="0" cellpadding="0" cellspacing="0" id="linkTable">

 <tr>
 <td >1.选择软件<br />

 <input name="Softfile" type="file" id="Softfile" /></td>
 <td ><br />
 <input name="submit" type="submit" onclick="return CheckForTestFile();" value="上传软件"/></td>
 </tr>
 </table>
</form>

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target.php

<script language="javascript">
//将上传后的信息返还给父窗口
function chuanzhi(){
parent.document.getElementByIdx_x('filesize').value=document.getElementByIdx_x('size').value;
parent.document.getElementByIdx_x('link').value=document.getElementByIdx_x('newsoftdir').value;
parent.document.getElementByIdx_x('linkdefult').value=1;
}
</script>
<body onLoad="chuanzhi();">
<&#63;php
//header('Content-Type:text/html;charset=gb2312');
define('SOFTDIR', "./upload/");  //上传后路径
define('HTTPSOFTDIR', "http://www.mysite.com/"); //服务器的路径

//判断上传软件后缀名是否允许
function isSoftExt($extension) {
 $ext = array('exe', 'rar', 'zip','gz');
 return in_array($extension, $ext) &#63; true : false;
}
if($_SERVER['REQUEST_METHOD']=='POST'){
$errors['0'] = true;
$errors['1'] = '请选择上传的软件图片';
$errors['2'] = '上传软件图片失败';
$errors['3'] = '上传软件图片失败';
$daytime = date('Y-m-d-h-m-s');
$timename=str_replace("-","",$daytime); //取得当天的日期时间


 //检查软件是否是正常上传的
 if(!is_uploaded_file($_FILES['Softfile']['tmp_name'])) {
 echo "<script>alert('非正常上传！');history.back();</script>";
 exit;
 }
 $extension = pathinfo($_FILES['Softfile']['name'], PATHINFO_EXTENSION);
 $filename = $timename."_".$_FILES['Softfile']['name'];
 $tmpsize=$_FILES['Softfile']['size'];
 $msize=round($tmpsize/1048576 , 2) ."M";
 $ksize=round($tmpsize/1024 ,2). "K";
 $filesize =$tmpsize>1048576&#63;$msize:$ksize;
 //检查软件文件格式
 if(!isSoftExt($extension)) {
 echo "<script>alert('上传的软件格式有错误！');history.back();</script>";
 exit;
 } 
 //移动软件
 if(!move_uploaded_file($_FILES['Softfile']['tmp_name'], SOFTDIR. $filename)) {
 echo "<script>alert('移动软件出错！');history.back();</script>";
 exit;
 }else{
 echo "<font size=2>上传成功!    文件大小为：<input type=text id='size' value='$filesize'></font><br>";
 echo "<font size=2>文件下载地址为：</font><input type=text id='newsoftdir' value='".HTTPSOFTDIR.$filename."' style='width=380'>";
 }
}else
echo "请不要直接输入地址！";

&#63;>

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getprogress.php

<&#63;php
//上传ajas获取进度页面
session_start();
if(isset($_GET['progress_key'])) {
 $status = apc_fetch('upload_'.$_GET['progress_key']);
 echo ($status['current']/$status['total'])*100;
}
echo 'APC_FILE='.APC_FILE;
&#63;>

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This article provides you with an idea for php to create progress upload files. There may be some shortcomings. I hope you can add them, or combine them with the articles compiled by the editor before. I hope it will be helpful to your learning. helped.

PHP uses the APC module to implement a large file upload progress bar, _PHP tutorial

PHP uses the APC module to implement a progress bar for large file uploads.