PHP using APC module to achieve large file upload progress bar Method _php Skill

PHP large file with the progress of the upload, has been a PHP programmer very distressed problem. Query Baidu, Google, generally do with the progress of the upload method: flash+php,socket,apc+php, and so on, I introduced the APC +php+ajax production with the progress of the upload , and posted the source code, hope for everyone useful.
Alternative PHP cache (APC) is a free and publicly optimized code cache for PHP. It is used to provide a free, open and robust architecture to cache and optimize PHP's intermediate code.

When you use APC, you must first use the Install APC module.
The first step: Download Php_apc.dll

Step two: Let php.ini support the APC extension module.
put the Php_apc.dll in your ext directory and open php.ini to join:
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 themselves

Step three: Check to see if the PHP APC is supported

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

Let's get down to business:
principle: through the APC module, use Ajas to read the upload progress from the cache. See:
index.php

<?php $unid =uniqid ("");//Identify the only Peugeot, achieve multiple uploads at the same time?> <div class= "Userinput2" > <div id= "Captions" > First upload the software you want to upload the server, please wait while uploading ... <span class= "Style1" ><br/> </span> <script type= "Text/javascript"
 > var xmlHttp;
 var pronum=0;
 var loop=0;
 Initializes the XmlHttp function Createxml () {var xmlHttp; if (window.
 XMLHttpRequest) {xmlhttp=new XMLHttpRequest ();
 }else{xmlhttp=new ActiveXObject ("Microsoft.XMLHTTP");
 return xmlHttp;
 } xmlhttp=createxml (); Ajas operation function Sendurl () {var url= "getprogress.php?progress_key=<?php Echo $unid;?
 > ";
 Xmlhttp.open ("Get", url,false); if (Window.navigator.userAgent.indexOf ("Firefox") >=1) {//If firefox3.0 xmlhttp.send ("progress_key=<?php Echo $unid;?
 > ");
 
 if (xmlhttp.status==200) Dohttpreadystatechange ();
 }else{xmlhttp.onreadystatechange = Dohttpreadystatechange; Xmlhttp.send ("progress_key=<?php echo $unid;?
 > "); }//Callback Functions function Dohttpreadystatechange () {if (xmlhttp.readystate== 4) {
 Pronum=parseint (Xmlhttp.responsetext);
 alert (pronum);
 Document.getelementbyidx_x ("Progressinner"). Style.width = pronum+ "%";
 Document.getelementbyidx_x ("Shownum"). InnerHTML = pronum+ "%";
 if (Pronum < MB) {settimeout ("Sendurl ()", 200); }else{//uploaded successfully, the information can not be obtained in time.
 Also hope that high man pointing document.getelementbyidx_x ("Progressouter"). style.display= "None";
 Document.getelementbyidx_x ("Progressinner"). style.display= "None";
 Document.getelementbyidx_x ("Shownum"). style.display= "None";
 Document.getelementbyidx_x ("Theframe"). style.display= "None";
 Document.getelementbyidx_x ("Link2"). style.display= "Block";
 }} function Startprogress () {document.getelementbyidx_x ("Progressouter"). style.display= "Block";
 SetTimeout ("Sendurl ()", 200);
 function Newsofturl (text) {document.getelementbyidx_x ("Link2"). style.display= "Block";
 Document.getelementbyidx_x ("Link2"). Value=text; } </script> <iframe id= "theframe" name= theframe "src=" softupload.php?id=<?php Echo ($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> Upload success!    file size is: <in Put type= "text" name= "FileSize" id= "FileSize" style= "width:50px"; /> </font><br> <br> <font size=2> file download address: </font><br/> <input type=text Name = ' link ' id= ' 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>

softupload.php

<?php $id = $_get[' id '];?> <script language= "JavaScript" >//trim the input text function Trim (input) {var
 LRE =/^\s*/;
 var rre =/\s*$/;
 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 ("Please select a file for upload!!!");
 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 (); Alert ("Correct file format is" + (Extarray.join ("")) + \ n Please select a new "+" file submit upload.");
 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. Select Software <br/> T;input name= "Softfile" type= "file" id= "Softfile"/></td> "<td ><br/> <input name=" Submit "type=

 "Submit" onclick= "return Checkfortestfile ();" value= "Upload Software"/></td> </tr> </table> </form>

target.php

<script language= "JavaScript" >//Returns the uploaded information to the parent window 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/"); Post-upload path define (' Httpsoftdir ', "http://www.mysite.com/");
 Server's path//To determine whether the upload software suffix name allows 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 '] = ' Please select uploaded software picture '; $errors [' 2 '] = ' upload software picture failed '; $e
rrors[' 3 '] = ' upload software picture failed ';
$daytime = Date (' Y-m-d-h-m-s '); $timename =str_replace ("-", "", $daytime); Get the day's date//check whether the software is normal uploaded if (!is_uploaded_file ($_files[' softfile '] [' tmp_name '])) {echo <script> alert (' Abnormal upload!
 '); 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: $ksize; Check the Software file format if (!issoftext ($extension)) {echo "<script>alert (' uploaded software is malformed!
 '); History.back ();</script> ";
 Exit }//Mobile software if (!move_uploaded_file ($_files[' softfile '] [' tmp_name '], Softdir. $filename)) {echo "<script>alert (' move Software Error!
 '); History.back ();</script> ";
 Exit }else{echo "<font size=2> upload success!    file size is: <input type=text id= ' size ' value= ' $filesize ' ></font&
 Gt;<br> "; echo "<font size=2> File Download address is: </font><input type=text id= ' Newsoftdir '".
 Httpsoftdir. $filename. "' style= ' width=380 ' > '; }else echo "Please do not enter the address directly!"

";

 ?>

getprogress.php

<?php
//Upload Ajas Get Progress page
session_start ();
if (Isset ($_get[' Progress_key ')) {
 $status = apc_fetch (' upload_ '. $_get[' Progress_key ']);
 Echo ($status [']/$status [' Total ']) *100
}
Echo ' apc_file= '. Apc_file;
? >

This article provides you with a PHP production with progress upload file ideas, there may be some lack of place, I hope that we can supplement, or combined with small series before finishing the article to learn, I hope to help you learn.