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516 lines
18 KiB
PHP
516 lines
18 KiB
PHP
<?php
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// +----------------------------------------------------------------------
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// | TOPThink [ WE CAN DO IT JUST THINK ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2011 http://topthink.com 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: liu21st <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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namespace Think;
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class Upload {
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protected $config = [
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'max_size' => -1, // 上传文件的最大值
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'support_multi' => true, // 是否支持多文件上传
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'allow_exts' => [], // 允许上传的文件后缀 留空不作后缀检查
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'allow_types' => [], // 允许上传的文件类型 留空不做检查
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'thumb' => false, // 使用对上传图片进行缩略图处理
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'thumb_max_width' => '',// 缩略图最大宽度
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'thumb_max_height' => '',// 缩略图最大高度
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'thumb_prefix' => 'thumb_',// 缩略图前缀
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'thumb_suffix' => '',
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'thumb_path' => '',// 缩略图保存路径
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'thumb_file' => '',// 缩略图文件名
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'thumb_ext' => '',// 缩略图扩展名
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'thumb_remove_origin' => false,// 是否移除原图
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'zip_images' => false,// 压缩图片文件上传
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'auto_sub' => false,// 启用子目录保存文件
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'sub_type' => 'hash',// 子目录创建方式 可以使用hash date custom
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'sub_dir' => '', // 子目录名称 subType为custom方式后有效
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'date_format' => 'Ymd',
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'hash_level' => 1, // hash的目录层次
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'save_path' => '',// 上传文件保存路径
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'auto_check' => true, // 是否自动检查附件
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'upload_replace' => false,// 存在同名是否覆盖
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'save_rule' => 'uniqid',// 上传文件命名规则
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'hash_type' => 'md5_file',// 上传文件Hash规则函数名
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];
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// 错误信息
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private $error = '';
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// 上传成功的文件信息
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private $uploadFileInfo ;
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public function __get($name){
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if(isset($this->config[$name])) {
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return $this->config[$name];
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}
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return null;
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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] = $value;
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}
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}
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public function __isset($name){
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return isset($this->config[$name]);
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}
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/**
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* 架构函数
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* @access public
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* @param array $config 上传参数
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*/
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public function __construct($config=[]) {
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if(is_array($config)) {
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$this->config = array_merge($this->config,$config);
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}
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}
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/**
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* 上传一个文件
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* @access protected
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* @param mixed $name 数据
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* @param string $value 数据表名
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* @return string
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*/
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protected function save($file) {
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$filename = $file['save_path'].$file['savename'];
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if(!$this->upload_replace && is_file($filename)) {
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// 不覆盖同名文件
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$this->error = '文件已经存在！'.$filename;
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return false;
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}
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// 如果是图像文件 检测文件格式
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if( in_array(strtolower($file['extension']),['gif','jpg','jpeg','bmp','png','swf'])) {
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$info = getimagesize($file['tmp_name']);
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if(false === $info || ('gif' == strtolower($file['extension']) && empty($info['bits']))){
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$this->error = '非法图像文件';
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return false;
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}
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}
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if(!move_uploaded_file($file['tmp_name'], $this->autoCharset($filename,'utf-8','gbk'))) {
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$this->error = '文件上传保存错误！';
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return false;
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}
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if($this->thumb && in_array(strtolower($file['extension']),['gif','jpg','jpeg','bmp','png'])) {
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$image = getimagesize($filename);
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if(false !== $image) {
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//是图像文件生成缩略图
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$thumbWidth = explode(',',$this->thumb_max_width);
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$thumbHeight = explode(',',$this->thumb_max_height);
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$thumb_prefix = explode(',',$this->thumb_prefix);
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$thumb_suffix = explode(',',$this->thumb_suffix);
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$thumb_file = explode(',',$this->thumb_file);
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$thumb_path = $this->thumb_path?$this->thumb_path:dirname($filename).'/';
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$thumb_ext = $this->thumb_ext ? $this->thumb_ext : $file['extension']; //自定义缩略图扩展名
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// 生成图像缩略图
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for($i=0,$len=count($thumbWidth); $i<$len; $i++) {
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if(!empty($thumb_file[$i])) {
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$thumbname = $thumb_file[$i];
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}else{
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$prefix = isset($thumb_prefix[$i])?$thumb_prefix[$i]:$thumb_prefix[0];
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$suffix = isset($thumb_suffix[$i])?$thumb_suffix[$i]:$thumb_suffix[0];
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$thumbname = $prefix.basename($filename,'.'.$file['extension']).$suffix;
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}
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ThinkImage::thumb($filename,$thumb_path.$thumbname.'.'.$thumb_ext,'',$thumbWidth[$i],$thumbHeight[$i],true);
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}
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if($this->thumb_remove_origin) {
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// 生成缩略图之后删除原图
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unlink($filename);
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}
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}
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}
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if($this->zipImags) {
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// TODO 对图片压缩包在线解压
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}
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return true;
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}
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/**
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* 上传所有文件
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* @access public
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* @param string $savePath 上传文件保存路径
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* @return string
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*/
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public function upload($savePath ='') {
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//如果不指定保存文件名，则由系统默认
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if(empty($savePath))
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$savePath = $this->save_path;
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// 检查上传目录
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if(!is_dir($savePath)) {
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// 检查目录是否编码后的
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if(is_dir(base64_decode($savePath))) {
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$savePath = base64_decode($savePath);
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}else{
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// 尝试创建目录
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if(!mkdir($savePath)){
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$this->error = '上传目录'.$savePath.'不存在';
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return false;
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}
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}
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}else {
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if(!is_writeable($savePath)) {
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$this->error = '上传目录'.$savePath.'不可写';
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return false;
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}
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}
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$fileInfo = [];
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$isUpload = false;
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// 获取上传的文件信息
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// 对$_FILES数组信息处理
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$files = $this->dealFiles($_FILES);
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foreach($files as $key => $file) {
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//过滤无效的上传
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if(!empty($file['name'])) {
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//登记上传文件的扩展信息
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if(!isset($file['key'])) $file['key'] = $key;
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$file['extension'] = $this->getExt($file['name']);
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$file['savepath'] = $savePath;
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$file['savename'] = $this->getSaveName($file);
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// 自动检查附件
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if($this->auto_check) {
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if(!$this->check($file))
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return false;
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}
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//保存上传文件
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if(!$this->save($file)) return false;
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if(function_exists($this->hash_type)) {
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$fun = $this->hash_type;
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$file['hash'] = $fun($this->autoCharset($file['savepath'].$file['savename'],'utf-8','gbk'));
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}
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//上传成功后保存文件信息，供其他地方调用
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unset($file['tmp_name'],$file['error']);
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$fileInfo[] = $file;
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$isUpload = true;
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}
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}
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if($isUpload) {
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$this->uploadFileInfo = $fileInfo;
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return true;
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}else {
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$this->error = '没有选择上传文件';
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return false;
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}
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}
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/**
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* 上传单个上传字段中的文件 支持多附件
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* @access public
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* @param array $file 上传文件信息
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* @param string $savePath 上传文件保存路径
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* @return string
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*/
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public function uploadOne($file,$savePath=''){
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//如果不指定保存文件名，则由系统默认
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if(empty($savePath))
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$savePath = $this->save_path;
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// 检查上传目录
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if(!is_dir($savePath)) {
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// 尝试创建目录
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if(!mkdir($savePath,0777,true)){
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$this->error = '上传目录'.$savePath.'不存在';
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return false;
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}
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}else {
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if(!is_writeable($savePath)) {
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$this->error = '上传目录'.$savePath.'不可写';
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return false;
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}
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}
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//过滤无效的上传
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if(!empty($file['name'])) {
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$fileArray = [];
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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; $i++) {
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foreach ($keys as $key)
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$fileArray[$i][$key] = $file[$key][$i];
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}
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}else{
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$fileArray[] = $file;
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}
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$info = [];
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foreach ($fileArray as $key=>$file){
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//登记上传文件的扩展信息
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$file['extension'] = $this->getExt($file['name']);
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$file['savepath'] = $savePath;
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$file['savename'] = $this->getSaveName($file);
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// 自动检查附件
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if($this->auto_check) {
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if(!$this->check($file))
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return false;
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}
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//保存上传文件
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if(!$this->save($file)) return false;
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if(function_exists($this->hash_type)) {
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$fun = $this->hash_type;
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$file['hash'] = $fun($this->autoCharset($file['savepath'].$file['savename'],'utf-8','gbk'));
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}
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unset($file['tmp_name'],$file['error']);
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$info[] = $file;
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}
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// 返回上传的文件信息
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return $info;
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}else {
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$this->error = '没有选择上传文件';
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return false;
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}
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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 protected
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* @param array $files 上传的文件变量
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* @return array
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*/
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protected function dealFiles($files) {
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$fileArray = [];
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$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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$fileArray[$key] = $file;
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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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* 获取错误代码信息
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* @access public
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* @param string $errorNo 错误号码
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* @return void
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*/
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protected function error($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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return ;
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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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* @access protected
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* @param string $filename 数据
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* @return string
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*/
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protected function getSaveName($filename) {
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$rule = $this->save_rule;
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if(empty($rule)) {//没有定义命名规则，则保持文件名不变
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$saveName = $filename['name'];
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}else {
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if(function_exists($rule)) {
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//使用函数生成一个唯一文件标识号
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$saveName = $rule().".".$filename['extension'];
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}else {
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//使用给定的文件名作为标识号
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$saveName = $rule.".".$filename['extension'];
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}
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}
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if($this->auto_sub) {
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// 使用子目录保存文件
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$filename['savename'] = $saveName;
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$saveName = $this->getSubName($filename).$saveName;
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}
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return $saveName;
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}
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/**
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* 获取子目录的名称
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* @access protected
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* @param array $file 上传的文件信息
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* @return string
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*/
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protected function getSubName($file) {
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switch($this->sub_type) {
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case 'custom':
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$dir = $this->sub_dir;
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break;
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case 'date':
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$dir = date($this->date_format,time()).'/';
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break;
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case 'hash':
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default:
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$name = md5($file['savename']);
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$dir = '';
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for($i=0;$i<$this->hash_level;$i++) {
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$dir .= $name{$i}.'/';
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}
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break;
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}
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if(!is_dir($file['savepath'].$dir)) {
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mkdir($file['savepath'].$dir,0777,true);
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}
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return $dir;
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}
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/**
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* 检查上传的文件
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* @access protected
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* @param array $file 文件信息
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* @return boolean
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*/
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protected function check($file) {
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if($file['error']!== 0) {
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//文件上传失败
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//捕获错误代码
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$this->error($file['error']);
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return false;
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}
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//文件上传成功，进行自定义规则检查
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//检查文件大小
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if(!$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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if(!$this->checkType($file['type'])) {
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$this->error = '上传文件MIME类型不允许！';
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return false;
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}
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//检查文件类型
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if(!$this->checkExt($file['extension'])) {
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$this->error ='上传文件类型不允许';
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return false;
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}
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//检查是否合法上传
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if(!$this->checkUpload($file['tmp_name'])) {
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$this->error = '非法上传文件！';
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return false;
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}
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return true;
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}
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// 自动转换字符集 支持数组转换
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protected function autoCharset($fContents, $from='gbk', $to='utf-8') {
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$from = strtoupper($from) == 'UTF8' ? 'utf-8' : $from;
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$to = strtoupper($to) == 'UTF8' ? 'utf-8' : $to;
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if (strtoupper($from) === strtoupper($to) || empty($fContents) || (is_scalar($fContents) && !is_string($fContents))) {
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//如果编码相同或者非字符串标量则不转换
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return $fContents;
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}
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if (function_exists('mb_convert_encoding')) {
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return mb_convert_encoding($fContents, $to, $from);
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} elseif (function_exists('iconv')) {
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return iconv($from, $to, $fContents);
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} else {
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return $fContents;
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}
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}
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/**
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* 检查上传的文件类型是否合法
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* @access protected
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* @param string $type 数据
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* @return boolean
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*/
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protected function checkType($type) {
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if(!empty($this->allow_types))
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return in_array(strtolower($type),$this->allow_types);
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return true;
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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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* @access protected
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* @param string $ext 后缀名
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* @return boolean
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*/
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protected function checkExt($ext) {
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if(!empty($this->allow_exts))
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return in_array(strtolower($ext),$this->allow_exts,true);
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return true;
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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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* @access protected
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* @param integer $size 数据
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* @return boolean
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*/
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protected function checkSize($size) {
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return !($size > $this->max_size) || (-1 == $this->max_size);
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}
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/**
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* 检查文件是否非法提交
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* @access protected
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* @param string $filename 文件名
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* @return boolean
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*/
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protected function checkUpload($filename) {
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return is_uploaded_file($filename);
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}
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/**
|
||
* 取得上传文件的后缀
|
||
* @access protected
|
||
* @param string $filename 文件名
|
||
* @return boolean
|
||
*/
|
||
protected function getExt($filename) {
|
||
$pathinfo = pathinfo($filename);
|
||
return $pathinfo['extension'];
|
||
}
|
||
|
||
/**
|
||
* 取得上传文件的信息
|
||
* @access public
|
||
* @return array
|
||
*/
|
||
public function getUploadFileInfo() {
|
||
return $this->uploadFileInfo;
|
||
}
|
||
|
||
/**
|
||
* 取得最后一次错误信息
|
||
* @access public
|
||
* @return string
|
||
*/
|
||
public function getErrorMsg() {
|
||
return $this->error;
|
||
}
|
||
}
|