php使用APC实现实时上传进度条功能

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php使用APC实现实时上传进度条功能_php技巧

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May 16, 2016 pm 08:05 PM

php不具备实时上传进度条功能，如果想有这种功能我们一般会使用ajax来实现，但是php提供了一个apc，它就可以与php配置实现上传进度条功能。
主要针对的是window上的应用。
1.服务器要支持apc扩展，没有此扩展的话，下载一个扩展扩展要求php.5.2以上。
2.配置apc相关配置,重启apache
代码如下

extension=php_apc.dll
apc.rfc1867 = on
apc.max_file_size = 1000M
upload_max_filesize = 1000M
post_max_size = 1000M
说明一下:至于参数要配多大，得看项目需要apc.max_file_size, 设置apc所支持上传文件的大小，要求apc.max_file_size并且apc.max_file_size 重新启动apache即可实现apc的支持.
3.在代码里面利用phpinfo();查看apc扩展安装了没有。
4.下面是实现代码：
getprogress.php
代码如下

<&#63;php 
session_start(); 
if(isset($_GET['progress_key'])) { 
 $status = apc_fetch('upload_'.$_GET['progress_key']); 
 echo ($status['current']/$status['total'])*100; 
} 
&#63;> 
upload.php
PHP Code
<&#63;php 
 $id = $_GET['id']; 
&#63;> 
<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;>"/> 
<input type="file" id="test_file" name="test_file"/><br/> 
<input onclick="window.parent.startProgress(); return true;" 
 type="submit" value="上传"/> 
</form>

target.php
代码如下

<&#63;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文件夹位于此脚本相同目录下 
 echo "<p>上传成功</p>"; 
} 
&#63;>

index.php
代码如下

<&#63;php 
 $id = md5(uniqid(rand(), true)); 
&#63;> 
<html> 
<head><title>上传进度</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&#63;progress_key=<&#63;php echo $id;&#63;>", 
   async : true, 
   cache : false, 
   dataType : 'json', 
   data: "progress_key=<&#63;php echo $id;&#63;>", 
   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&#63;id=<&#63;php echo $id; &#63;>" 
 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实现实时上传进度条功能的方法，希望对大家的学习有所帮助。

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