mirror of
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430 lines
14 KiB
PHP
430 lines
14 KiB
PHP
<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: 麦当苗儿 <zuojiazi@vip.qq.com> <http://www.zjzit.cn>
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// +----------------------------------------------------------------------
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namespace Think;
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class Upload {
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/**
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* 默认上传配置
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* @var array
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*/
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private $config = array(
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'mimes' => array(), //允许上传的文件MiMe类型
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'maxSize' => 0, //上传的文件大小限制 (0-不做限制)
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'exts' => array(), //允许上传的文件后缀
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'autoSub' => true, //自动子目录保存文件
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'subName' => array('date', 'Y-m-d'), //子目录创建方式，[0]-函数名，[1]-参数，多个参数使用数组
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'rootPath' => './Uploads/', //保存根路径
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'savePath' => '', //保存路径
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'saveName' => array('uniqid', ''), //上传文件命名规则，[0]-函数名，[1]-参数，多个参数使用数组
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'saveExt' => '', //文件保存后缀，空则使用原后缀
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'replace' => false, //存在同名是否覆盖
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'hash' => true, //是否生成hash编码
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'callback' => false, //检测文件是否存在回调，如果存在返回文件信息数组
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'driver' => '', // 文件上传驱动
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'driverConfig' => array(), // 上传驱动配置
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);
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/**
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* 上传错误信息
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* @var string
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*/
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private $error = ''; //上传错误信息
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/**
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* 上传驱动实例
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* @var Object
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*/
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private $uploader;
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/**
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* 构造方法，用于构造上传实例
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* @param array $config 配置
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* @param string $driver 要使用的上传驱动 LOCAL-本地上传驱动，FTP-FTP上传驱动
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*/
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public function __construct($config = array(), $driver = '', $driverConfig = null){
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/* 获取配置 */
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$this->config = array_merge($this->config, $config);
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/* 设置上传驱动 */
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$this->setDriver($driver, $driverConfig);
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/* 调整配置，把字符串配置参数转换为数组 */
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if(!empty($this->config['mimes'])){
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if(is_string($this->mimes)) {
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$this->config['mimes'] = explode(',', $this->mimes);
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}
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$this->config['mimes'] = array_map('strtolower', $this->mimes);
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}
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if(!empty($this->config['exts'])){
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if (is_string($this->exts)){
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$this->config['exts'] = explode(',', $this->exts);
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}
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$this->config['exts'] = array_map('strtolower', $this->exts);
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}
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}
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/**
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* 使用 $this->name 获取配置
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* @param string $name 配置名称
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* @return multitype 配置值
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*/
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public function __get($name) {
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return $this->config[$name];
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}
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public function __set($name,$value){
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if(isset($this->config[$name])) {
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$this->config[$name] = $value;
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if($name == 'driverConfig'){
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//改变驱动配置后重置上传驱动
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//注意：必须选改变驱动然后再改变驱动配置
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$this->setDriver();
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}
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}
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}
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public function __isset($name){
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return isset($this->config[$name]);
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}
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/**
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* 获取最后一次上传错误信息
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* @return string 错误信息
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*/
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public function getError(){
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return $this->error;
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}
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/**
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* 上传单个文件
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* @param array $file 文件数组
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* @return array 上传成功后的文件信息
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*/
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public function uploadOne($file){
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$info = $this->upload(array($file));
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return $info ? $info[0] : $info;
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}
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/**
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* 上传文件
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* @param 文件信息数组 $files ，通常是 $_FILES数组
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*/
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public function upload($files='') {
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if('' === $files){
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$files = $_FILES;
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}
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if(empty($files)){
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$this->error = '没有上传的文件！';
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return false;
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}
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/* 检测上传根目录 */
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if(!$this->uploader->checkRootPath($this->rootPath)){
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$this->error = $this->uploader->getError();
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return false;
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}
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/* 检查上传目录 */
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if(!$this->uploader->checkSavePath($this->savePath)){
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$this->error = $this->uploader->getError();
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return false;
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}
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/* 逐个检测并上传文件 */
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$info = array();
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if(function_exists('finfo_open')){
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$finfo = finfo_open ( FILEINFO_MIME_TYPE );
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}
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// 对上传文件数组信息处理
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$files = $this->dealFiles($files);
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foreach ($files as $key => $file) {
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$file['name'] = strip_tags($file['name']);
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if(!isset($file['key'])) $file['key'] = $key;
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/* 通过扩展获取文件类型，可解决FLASH上传$FILES数组返回文件类型错误的问题 */
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if(isset($finfo)){
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$file['type'] = finfo_file ( $finfo , $file['tmp_name'] );
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}
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/* 获取上传文件后缀，允许上传无后缀文件 */
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$file['ext'] = pathinfo($file['name'], PATHINFO_EXTENSION);
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/* 文件上传检测 */
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if (!$this->check($file)){
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continue;
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}
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/* 获取文件hash */
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if($this->hash){
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$file['md5'] = md5_file($file['tmp_name']);
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$file['sha1'] = sha1_file($file['tmp_name']);
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}
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/* 调用回调函数检测文件是否存在 */
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$data = call_user_func($this->callback, $file);
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if( $this->callback && $data ){
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if ( file_exists('.'.$data['path']) ) {
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$info[$key] = $data;
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continue;
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}elseif($this->removeTrash){
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call_user_func($this->removeTrash,$data);//删除垃圾据
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}
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}
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/* 生成保存文件名 */
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$savename = $this->getSaveName($file);
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if(false == $savename){
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continue;
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} else {
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$file['savename'] = $savename;
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}
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/* 检测并创建子目录 */
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$subpath = $this->getSubPath($file['name']);
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if(false === $subpath){
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continue;
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} else {
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$file['savepath'] = $this->savePath . $subpath;
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}
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/* 对图像文件进行严格检测 */
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$ext = strtolower($file['ext']);
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if(in_array($ext, array('gif','jpg','jpeg','bmp','png','swf'))) {
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$imginfo = getimagesize($file['tmp_name']);
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if(empty($imginfo) || ($ext == 'gif' && empty($imginfo['bits']))){
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$this->error = '非法图像文件！';
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continue;
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}
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}
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/* 保存文件 并记录保存成功的文件 */
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if ($this->uploader->save($file,$this->replace)) {
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unset($file['error'], $file['tmp_name']);
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$info[$key] = $file;
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} else {
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$this->error = $this->uploader->getError();
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}
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}
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if(isset($finfo)){
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finfo_close($finfo);
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}
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return empty($info) ? false : $info;
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}
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/**
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* 转换上传文件数组变量为正确的方式
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* @access private
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* @param array $files 上传的文件变量
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* @return array
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*/
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private function dealFiles($files) {
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$fileArray = array();
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$n = 0;
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foreach ($files as $key=>$file){
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if(is_array($file['name'])) {
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$keys = array_keys($file);
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$count = count($file['name']);
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for ($i=0; $i<$count; $i++) {
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$fileArray[$n]['key'] = $key;
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foreach ($keys as $_key){
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$fileArray[$n][$_key] = $file[$_key][$i];
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}
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$n++;
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}
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}else{
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$fileArray = $files;
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break;
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}
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}
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return $fileArray;
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}
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/**
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* 设置上传驱动
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* @param string $driver 驱动名称
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* @param array $config 驱动配置
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*/
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private function setDriver($driver = null, $config = null){
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$driver = $driver ? : ($this->driver ? : C('FILE_UPLOAD_TYPE'));
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$config = $config ? : ($this->driverConfig ? : C('UPLOAD_TYPE_CONFIG'));
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$class = strpos($driver,'\\')? $driver : 'Think\\Upload\\Driver\\'.ucfirst(strtolower($driver));
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$this->uploader = new $class($config);
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if(!$this->uploader){
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E("不存在上传驱动：{$name}");
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}
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}
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/**
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* 检查上传的文件
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* @param array $file 文件信息
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*/
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private function check($file) {
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/* 文件上传失败，捕获错误代码 */
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if ($file['error']) {
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$this->error($file['error']);
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return false;
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}
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/* 无效上传 */
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if (empty($file['name'])){
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$this->error = '未知上传错误！';
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}
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/* 检查是否合法上传 */
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if (!is_uploaded_file($file['tmp_name'])) {
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$this->error = '非法上传文件！';
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return false;
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}
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/* 检查文件大小 */
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if (!$this->checkSize($file['size'])) {
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$this->error = '上传文件大小不符！';
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return false;
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}
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/* 检查文件Mime类型 */
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//TODO:FLASH上传的文件获取到的mime类型都为application/octet-stream
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if (!$this->checkMime($file['type'])) {
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$this->error = '上传文件MIME类型不允许！';
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return false;
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}
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/* 检查文件后缀 */
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if (!$this->checkExt($file['ext'])) {
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$this->error = '上传文件后缀不允许';
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return false;
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}
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/* 通过检测 */
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return true;
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}
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/**
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* 获取错误代码信息
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* @param string $errorNo 错误号
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*/
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private function error($errorNo) {
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switch ($errorNo) {
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case 1:
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$this->error = '上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值！';
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break;
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case 2:
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$this->error = '上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值！';
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break;
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case 3:
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$this->error = '文件只有部分被上传！';
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break;
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case 4:
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$this->error = '没有文件被上传！';
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break;
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case 6:
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$this->error = '找不到临时文件夹！';
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break;
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case 7:
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$this->error = '文件写入失败！';
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break;
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default:
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$this->error = '未知上传错误！';
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}
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}
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/**
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* 检查文件大小是否合法
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* @param integer $size 数据
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*/
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private function checkSize($size) {
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return !($size > $this->maxSize) || (0 == $this->maxSize);
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}
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/**
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* 检查上传的文件MIME类型是否合法
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* @param string $mime 数据
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*/
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private function checkMime($mime) {
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return empty($this->config['mimes']) ? true : in_array(strtolower($mime), $this->mimes);
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}
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/**
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* 检查上传的文件后缀是否合法
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* @param string $ext 后缀
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*/
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private function checkExt($ext) {
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return empty($this->config['exts']) ? true : in_array(strtolower($ext), $this->exts);
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}
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/**
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* 根据上传文件命名规则取得保存文件名
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* @param string $file 文件信息
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*/
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private function getSaveName($file) {
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$rule = $this->saveName;
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if (empty($rule)) { //保持文件名不变
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/* 解决pathinfo中文文件名BUG */
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$filename = substr(pathinfo("_{$file['name']}", PATHINFO_FILENAME), 1);
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$savename = $filename;
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} else {
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$savename = $this->getName($rule, $file['name']);
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if(empty($savename)){
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$this->error = '文件命名规则错误！';
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return false;
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}
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}
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/* 文件保存后缀，支持强制更改文件后缀 */
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$ext = empty($this->config['saveExt']) ? $file['ext'] : $this->saveExt;
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return $savename . '.' . $ext;
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}
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/**
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* 获取子目录的名称
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* @param array $file 上传的文件信息
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*/
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private function getSubPath($filename) {
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$subpath = '';
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$rule = $this->subName;
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if ($this->autoSub && !empty($rule)) {
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$subpath = $this->getName($rule, $filename) . '/';
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if(!empty($subpath) && !$this->uploader->mkdir($this->savePath . $subpath)){
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$this->error = $this->uploader->getError();
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return false;
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}
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}
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return $subpath;
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}
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/**
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* 根据指定的规则获取文件或目录名称
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* @param array $rule 规则
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* @param string $filename 原文件名
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* @return string 文件或目录名称
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*/
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private function getName($rule, $filename){
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$name = '';
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if(is_array($rule)){ //数组规则
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$func = $rule[0];
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$param = (array)$rule[1];
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foreach ($param as &$value) {
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$value = str_replace('__FILE__', $filename, $value);
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}
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$name = call_user_func_array($func, $param);
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} elseif (is_string($rule)){ //字符串规则
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if(function_exists($rule)){
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$name = call_user_func($rule);
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} else {
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$name = $rule;
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}
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}
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return $name;
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}
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}
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