PHP无刷新上传文件实现代码-php-IT落伍者

indexhtml

                     <html>
         <head>
         <title>无刷新上传文件</title>
         <meta Contenttype="text/html" charset="utf" />
         <script type="text/javascript">
         function startUpload() {
         documentgetElementById(processing)innerHTML = loding;
         return true;
         }
         function stopUpload(rel){
         var msg;
         switch (rel) {
         case :
         msg = "上传成功";
         break;
         case :
         msg = "上传的文件超过限制";
         break;
         case :
         msg = "只能上传图片文件";
         break;
         default:
         msg = "上传文件失败";
         }
         documentgetElementById(processing)innerHTML = msg;
         }
         </script>
         </head>
         <body>
         <div style="textalign:center">
         <div id="processing"></div>
         <form action="uploadphp" method="post" enctype="multipart/formdata" target="formtarget" onsubmit="startUpload();">
         <input type="hidden" name="MAX_FILE_SIZE" value="" />
         <input type="file" name="myfile" />
         <input type="submit" name="sub" value="upload" />
         </form>
         <iframe style="width:; height:; border:;" name="formtarget"></iframe>
         </div>
         </body>
         </html>          uploadphp

                     <?php
         sleep();
         $fileTypes = array(jpgpnggifbmp);
         $result = null;
         $uploadDir = /upfiles;
         $maxSize = * pow();
         if ($_SERVER[REQUEST_METHOD] == POST && isset($_POST[sub])) {
         $myfile = $_FILES[myfile];
         $myfileType = substr($myfile[name] strrpos($myfile[name] "") + );
         if ($myfile[size] > $maxSize) {
         $result = ;
         } else if (!in_array($myfileType $fileTypes)) {
         $result = ;
         } elseif (is_uploaded_file($myfile[tmp_name])) {
         $toFile = $uploadDir / $myfile[name];
         if (@move_uploaded_file($myfile[tmp_name] $toFile)) {
         $result = ;
         } else {
         $result = ;
         }
         } else {
         $result = ;
         }
         }
         ?>
         <script type="text/javascript">
         windowtopwindowstopUpload(<?php echo $result; ?>);