php不具備即時上傳進度條功能，如果想有這種功能我們一般會使用ajax來實現，但是php提供了一個apc，它就可以與php配置實現上傳進度條功能。
主要針對的是window上的應用。
1.伺服器要支援apc擴充，沒有此擴充的話，下載一個擴充擴充要求php.5.2以上。
2.配置apc相關配置,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:至於參數要配多大，得看項目需要apc.max_file_size, 設定apc所支援上傳檔案的大小，要求apc.max_file_size<=upload_max_filesize 並且apc.max_file_size <=post_max_size.重新啟動apache即可實現apc的支援.
3.在代碼裡面利用phpinfo();查看apc擴充安裝了沒有。
4.下面是實現代碼：
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.phpPHP 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檔案夾位於此指令碼相同目錄下 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> <div id='showNum'></div><br> <div id='showNum2'></div> </body> </html>
以上就是跟大家分享的php使用APC實現即時上傳進度條功能的方法，希望對大家的學習有所協助。
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