Flex与php结合的上传功能代码

<?xml version="1.0" encoding="utf-8"?>

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" 

    layout="absolute"  fontSize="12" creationComplete="initApp()">

    <mx:Script>

        <![CDATA[

        /**

         * Flex与php结合的上传功能

         * Author:www.phpcq.com PHP技术博客

         */

            import mx.controls.Text;

            import mx.controls.Alert;

            import flash.events.Event;

            import flash.net.FileReference;

            import flash.net.URLRequest;

            import flash.net.FileFilter;

            import flash.net.URLVariables;

            import flash.events.ProgressEvent;

            import mx.managers.CursorManager;

            import mx.utils.StringUtil;

            [Bindable]

            private var file:FileReference;

            private var fileName:String = "";

            internal function initApp():void{

                //FileReference 类提供了在用户计算机和服务器之间上载和下载文件的方法

                file = new FileReference();

                //选定文件后Event.SELECT事件触发

                file.addEventListener(Event.SELECT,onSelect);

                //获取上传进度

                file.addEventListener(ProgressEvent.PROGRESS,progressHandler);            

            }

            internal function selectFile():void{ 

                //过滤文件

                var imgType:FileFilter = new FileFilter("png","*.png");

                var allType:Array = new Array(imgType);

                //仅显示以上过滤后的文件

                file.browse(allType);

            }

            internal function startUp():void{

                    var request:URLRequest = 

                    new URLRequest("http://localhost/up/src/upload.php");//后台程序

                    fileName = new Date().getTime().toString()+".png";//文件重命名

                    request.data = new URLVariables("filename="+fileName);

                    if(StringUtil.trim(pic_txt.text) != ''){//当文件不能为空时

                        file.upload(request);

                        CursorManager.setBusyCursor();//设置鼠标为忙碌状态

                    } else {

                        Alert.show("上传文件不能为空!");

                    }

            }

            internal function onSelect(evt:Event):void{

                    pic_txt.text = file.name;//将文件名保存至文本框里

                

            }

            internal function progressHandler(e:ProgressEvent):void{

                if(e.bytesLoaded == e.bytesTotal){//这里是至上传进度---上传成功后

                    CursorManager.removeBusyCursor();//取消忙碌状态

                    

                } 

            }

        ]]>

    </mx:Script>

    <!--文本框被事件触发为平时所见的文本域-->

    <mx:TextInput x="235.5" y="177" height="21" id="pic_txt" 

        width="227" editable="false"/>

    <mx:Button x="470.5" y="177" label="选择文件" click="selectFile()"/>

    <mx:Button x="556.5" y="177" label="上传文件" click="startUp()"/>

    <mx:Text x="173.5" y="178" text="上传文件" />

</mx:Application>

后台程序upload.php中的代码如下:

<?php

$imgName = $_GET['filename'];

$file = $_FILES['Filedata']['tmp_name'];

move_uploaded_file($file,$imgName);   

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