PHP+JavaScript实现无刷新上传图片

html文件代码

<!-- ajax文件上传开始 -->

<script type="text/javascript" src="/imageupload/jquery-1.10.2.min.js"></script>

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

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

<!--ajax文件上传结束-->

<!--上传文件按钮列表开始-->

<input id="requesturl" type="hidden" value="{:U('admin/upload/uploadfile')}" />

<input id="ajaxuploadfile" type="file" onchange="filechange()"/>

<input id="filepathurl" type="hidden" value="" />

<input type="button" value="第一张" pathurl="./Uploads/admin/trailer/" class="uploadclass" />

<input type="button" value="第二张" pathurl="./Uploads/admin/fdfdfd/" class="uploadclass" />

<input type="button" value="第三张" pathurl="./Uploads/admin/cdcdfd/" class="uploadclass" />

<!--上传文件按钮列表结束-->

php文件代码

/**

* 文件上传方法

*/

public function uploadfile(){

//单文件上传

$upload = new \Think\Upload();// 实例化上传类

$upload->maxSize = 100000000 ;// 设置附件上传大小

$upload->exts = array('jpg', 'gif', 'png', 'jpeg');// 设置附件上传类型

$url = $_POST['filepathurl'];

if (!file_exists($url)){

mkdir ($url,0777,true);

}

$upload->rootPath = $url; // 设置附件上传根目录

// 上传单个文件

$info = $upload->uploadOne($_FILES['postfilename']);

if(!$info) {

echo json_encode(array('bool'=>false,'error'=>$upload->getError()));

}else{

$path = $info['savepath'].$info['savename'];

echo json_encode(array('bool'=>true,'path'=>$path));

}

}

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