TP上传图片并预览 ifame 实现

效果图：

直接上代码了、

<div class="main-wrap">
    <div class="profile">
        <p class="logo-line"><label class="label">上传头像：</label><input type="text" name="logo" id="logo" class="txtinput" /><input type="button" value="浏览" onClick="upFile()"><span class="logo"><img src="__PUBLIC__/Admin/images/getAvatar.jpg" id="image" /></span></p>
        <p><label class="label">昵称：</label><input type="text" name="" class="txtinput" /></p>
    <p><label class="label">性别：</label><label><input type="radio" name="gender" value="0">男</label> <label><input type="radio" name="gender" value="1">女</label></p>
    </div>
</div>
<form id="fileUpload" name="fileUpload" method="post" enctype="multipart/form-data" target="frameFile">
<input id="upfile" name="upfile" contenteditable="false" type="file" style="display:none;" onChange="$('#fileUpload').attr('action','__URL__/frameUpload?' + new Date().getTime() );document.fileUpload.submit();" />
</form>
<!-- 实现本页面图片显示 -->
<iframe id="frameFile" name="frameFile" style="display: none;"></iframe>

<script type="text/javascript">
function upFile(){
    var isIE=document.all && window.external;
    if(!isIE){
        document.getElementById('upfile').click();
    }
}
function InsertMsgPic($state,imgthumb)
{
    if($state=='SUCCESS'){
        $('#image').attr('src',imgthumb);
        $('#logo').val(imgthumb);
    }else{
        alert($state);
    }
}
</script>

//框架上传
public function frameUpload(){
    //配置上传参数
    $config = array(
        "rootPath"=>'./Uploads/',
        "savePath" => $this->savePath,
        "maxSize" =>  20000000, // 单位B
        "exts" => explode(",", 'gif,png,jpg,jpeg,bmp'),
        "subName" => $this->sub_name,
    );
    $upload = new \Think\Upload($config);// 实例化上传类
    $info   =   $upload->upload();
    if($info) {
        //上传成功 获取上传文件信息
        $state = "SUCCESS";
    }else{
        // 上传错误提示错误信息
        $state = "ERROR" . $upload->getError();
    }
    $file_url = '/Uploads/'.$info['upfile']['savepath'].$info['upfile']['savename'];
    header('Content-type: text/html; charset=UTF-8');
    echo '<script>window.parent.InsertMsgPic("'.$state.'","'.$file_url.'");</script>';
    exit;
}