php ajaxfileupload实现ajax文件上传功能

<script

    type="text/javascript" src="ajaxfileupload.js"></script>

<form id="upform" action="" method="post" enctype="multipart/form-data">

    <input id='fname' size='80' /><br> <input type="file" name="file1"

       id="file1" size="30" /> <input type="button" value="上传"

       onclick="return ajaxFileUpload();" /> <span id="msg"

       style="display: none">UpLoading...</span>

</form>

<script type="text/javascript">

var str = '';

function ajaxFileUpload(){

    $("#msg")

    .ajaxStart(function(){

       $(this).show();

    });

    /*

    .ajaxComplete(function(){

       $(this).hide();

    });

    */

    $.ajaxFileUpload(

    {

       url:'up_deal.php',

       secureuri:false,

       fileElementId:'file1',

       dataType: 'text',

       //data:{name:'qinmi', id:'123'},

       success: function(data){

              if(data=='error'){

                  $('#msg').html("<span style='color:red'>上传失败</span>");

              }else{ www.111cn.net

                  $('#msg').html("<span style='color:green'>上传成功</span>");

                  str +=  data+'@';

                  $('#fname').val(str);

              }

           }

       }

    );

    return false;

}

</script>

if ((($_FILES["file1"]["type"] == "image/gif")

|| ($_FILES["file1"]["type"] == "image/jpeg")

|| ($_FILES["file1"]["type"] == "image/bmp")

|| ($_FILES["file1"]["type"] == "image/pjpeg"))

&& ($_FILES["file1"]["size"] < 100000)){//100KB

    $extend = explode(".",$_FILES["file1"]["name"]);

    $key = count($extend)-1;

    $ext = ".".$extend[$key];

    $newfile = time().$ext;

    if(!file_exists('upload')){mkdir('upload');}

    move_uploaded_file($_FILES["file1"]["tmp_name"],"upload/" . $newfile);

    @unlink($_FILES['file1']);

    echo $newfile;

}else {

    echo 'error';

}

?>