区别一般的上传,一般的上传要点击上传按钮,本例无按钮,选择图片后就自动上传
jquery.form.js版本为2.84
演示
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XML/HTML Code
- <script?type="text/javascript"?src="../../js/jquery-1.3.2.min.js"></script>??
- <script?type="text/javascript"?src="scripts/jquery.form.js"></script>??
- ??
- <script?type="text/javascript"?>??
- ?$(document).ready(function()?{???
- ??????????
- ????????????$('#photoimg').live('change',?function()????????????{???
- ???????????????????????$("#preview").html('');??
- ????????????????$("#preview").html('<img?src="loader.gif"?alt="Uploading...."/>');??
- ????????????$("#imageform").ajaxForm({??
- ????????????????????????target:?'#preview'??
- ????????}).submit();??
- ??????????
- ????????????});??
- ????????});???
- </script>??
- <div?style="width:600px">??
- ??
- <form?id="imageform"?method="post"?enctype="multipart/form-data"?action='ajaximage.php'>??
- 上传?<input?type="file"?name="photoimg"?id="photoimg"?/>??
- </form>??
- <div?id='preview'>??
- </div>??
- ??
- ??
- </div>??
?ajaximage.php
PHP Code
- <?php??
- session_start();??
- $session_id='1';?//$session?id??
- $path?=?"../upload/";??
- ??
- ????$valid_formats?=?array("jpg",?"png",?"gif",?"bmp");??
- ????if(isset($_POST)?and?$_SERVER['REQUEST_METHOD']?==?"POST")??
- ????????{??
- ????????????$name?=?$_FILES['photoimg']['name'];??
- ????????????$size?=?$_FILES['photoimg']['size'];??
- ??????????????
- ????????????if(strlen($name))??
- ????????????????{??
- ????????????????????list($txt,?$ext)?=?explode(".",?$name);??
- ????????????????????if(in_array($ext,$valid_formats))??
- ????????????????????{??
- ????????????????????if($size<(1024*1024))??
- ????????????????????????{??
- ????????????????????????????$actual_image_name?=?time().substr(str_replace("?",?"_",?$txt),?5).".".$ext;??
- ????????????????????????????$tmp?=?$_FILES['photoimg']['tmp_name'];??
- ????????????????????????????if(move_uploaded_file($tmp,?$path.$actual_image_name))??
- ????????????????????????????????{??
- ??????????????????????????????????
- ??????????????????????????????????????
- ????????????????????????????????????echo?"<img?src='../upload/".$actual_image_name."'??class='preview'>";??
- ????????????????????????????????}??
- ????????????????????????????else??
- ????????????????????????????????echo?"failed";??
- ????????????????????????}??
- ????????????????????????else??
- ????????????????????????echo?"Image?file?size?max?1?MB";??????????????????????
- ????????????????????????}??
- ????????????????????????else??
- ????????????????????????echo?"Invalid?file?format..";?????
- ????????????????}??
- ??????????????????
- ????????????else??
- ????????????????echo?"Please?select?image..!";??
- ??????????????????
- ????????????exit;??
- ????????}??
- ?>??
?
原文地址:http://www.freejs.net/article_biaodan_75.html