PHP利用apc實(shí)現(xiàn)上傳進(jìn)度條方法

2024-05-04 21:48:34

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php本身是不具備可以帶有實(shí)時(shí)上傳進(jìn)度條功能了,如果想有這種功能我們一般會(huì)使用ajax來實(shí)現(xiàn),但是php提供了一個(gè)apc,他就可以與php配置實(shí)現(xiàn)上傳進(jìn)度條.

主要針對(duì)的是window上的應(yīng)用.

1.服務(wù)器要支持apc擴(kuò)展,沒有此擴(kuò)展的話,百度一下php_apc.dll,下載一個(gè)擴(kuò)展擴(kuò)展要求php.5.2以上.

2.配置apc相關(guān)配置,重啟apache,代碼如下:

extension=php_apc.dll

apc.rfc1867 = on

apc.max_file_size = 1000M

upload_max_filesize = 1000M

post_max_size = 1000M

說明一下:至于參數(shù)要配多大，得看項(xiàng)目需要apc.max_file_size,設(shè)置apc所支持上傳文件的大小,要求apc.max_file_size <=upload_max_filesize 并且apc.max_file_size <=post_max_size.重新啟動(dòng)apache即可實(shí)現(xiàn)apc的支持.

3.在代碼里面利用phpinfo();查看apc擴(kuò)展安裝了沒有.

4.下面是實(shí)現(xiàn)代碼,getprogress.php,代碼如下:

<?php

session_start();

if(isset($_GET['progress_key'])) {

  $status = apc_fetch('upload_'.$_GET['progress_key']);

  echo ($status['current']/$status['total'])*100;

}

?>

upload.php,PHP Code:

<?php

   $id = $_GET['id'];

?>

<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?>"/>

<input type="file" id="test_file" name="test_file"/><br/>

<input onclick="window.parent.startProgress(); return true;"

type="submit" value="上傳"/>

</form>

target.php,代碼如下:

<?php

set_time_limit(600);

if($_SERVER['REQUEST_METHOD']=='POST') {

  move_uploaded_file($_FILES["test_file"]["tmp_name"],

  dirname($_SERVER['SCRIPT_FILENAME'])."/UploadTemp/" . $_FILES["test_file"]["name"]);//UploadTemp文件夾位于此腳本相同目錄下

  echo "<p>上傳成功</p>";

}

?>

index.php,代碼如下:

<?php

   $id = md5(uniqid(rand(), true));

?>

<html>

<head><title>上傳進(jìn)度</title></head>

<body>

<script src="js/jquery-1.4.4.min.js" language="javascript"></script>





<script language="javascript">

var proNum=0;

var loop=0;

var progressResult;

function sendURL() {

            $.ajax({

                        type : 'GET',

                        url : "getprogress.php?progress_key=<?php echo $id;?>",

                        async : true,

                        cache : false,

                        dataType : 'json',

                        data: "progress_key=<?php echo $id;?>",

                        success : function(e) {

                                     progressResult = e;

                                      proNum=parseInt(progressResult);

                                      document.getElementById("progressinner").style.width = proNum+"%";

                                      document.getElementById("showNum").innerHTML = proNum+"%";

                                      if ( proNum < 100){

                                        setTimeout("getProgress()", 100);

                                      }



                        }

            });



}



function getProgress(){

loop++;



sendURL();

}

var interval;

function startProgress(){

    document.getElementById("progressouter").style.display="block";

   setTimeout("getProgress()", 100);

}

</script>

<iframe id="theframe" name="theframe"

        src="upload.php?id=<?php echo $id; ?>"

        style="border: none; height: 100px; width: 400px;" >

</iframe>

<br/><br/>

<div id="progressouter" style="width: 500px; height: 20px; border: 6px solid red; display:none;">

   <div id="progressinner" style="position: relative; height: 20px; background-color: purple; width: 0%; "></div>

</div>//開源代碼Vevb.com

<div id='showNum'></div><br>

<div id='showNum2'></div>

</body>

</html>