PHP利用apc实现上传进度条方法
php本身是不具备可以带有实时上传进度条功能了,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,他就可以与php配置实现上传进度条.
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,百度一下php_apc.dll,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 <=upload_max_filesize 并且apc.max_file_size <=post_max_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:
<?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= "上传" /> </form>target.php,代码如下:
<?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文件夹位于此脚本相同目录下 echo "<p>上传成功</p>" ; } ?>index.php,代码如下:
<?php $id = md5(uniqid(rand(), true)); ?> <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?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> //开源代码phpfensi.com <div id= 'showNum' ></div><br> <div id= 'showNum2' ></div> </body> </html>查看更多关于PHP利用apc实现上传进度条方法 - php高级应用的详细内容...
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