PHP利用APC模块实现大文件上传进度条的方法

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

<?php $unid=uniqid("");//确定唯一标致，实现多人同时上传?><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?progress_key=<?php echo $unid;?>";  xmlHttp.open("GET",url,false);  if (window.navigator.userAgent.indexOf("Firefox")>=1){  //如果是firefox3.0  xmlHttp.send("progress_key=<?php echo $unid;?>");  if(xmlHttp.status==200) doHttpReadyStateChange();   }else{  xmlHttp.onreadystatechange = doHttpReadyStateChange;  xmlHttp.send("progress_key=<?php echo $unid;?>");  } } //回调函数 function doHttpReadyStateChange() {  if (xmlHttp.readyState== 4){  proNum=parseInt(xmlHttp.responseText);  //alert(proNum);  document.getElementByIdx_x("progressinner").style.width = proNum+"%";  document.getElementByIdx_x("showNum").innerHTML = proNum+"%";  if ( proNum < 100){  setTimeout("sendURL()", 200);  }else{  //上传成功后，还不能及时得到信息。还希望高人指点  document.getElementByIdx_x("progressouter").style.display="none";  document.getElementByIdx_x("progressinner").style.display="none";  document.getElementByIdx_x("showNum").style.display="none";  document.getElementByIdx_x("theframe").style.display="none";  document.getElementByIdx_x("link2").style.display="block";  }   } } function startProgress(){  document.getElementByIdx_x("progressouter").style.display="block";  setTimeout("sendURL()", 200); } function newsofturl(text){  document.getElementByIdx_x("link2").style.display="block";  document.getElementByIdx_x("link2").value=text; } </script> <iframe id="theframe" name="theframe" src="softupload.php?id=<?php echo($unid); ?>" 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> 

<?php $id = $_GET['id'];?><script language="javascript">//Trim the input textfunction Trim(input){ var lre = /^/s*/; var rre = //s*$/; 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="<?php echo $id?>"/><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>

<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();"><?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, $ext) ? true : false;}if($_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?$msize:$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'>"; }}elseecho "请不要直接输入地址！";?>

<?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;?>