class upload{
??? /**
???? * html表單 input 域的 name 屬性，默認(rèn)為'file'
??? */
??? var $file_field = 'file' ;
???
??? /**
???? * $_files 數(shù)組
??? */
??? var $file_array;
???
??? /**
???? * 保存路徑，默認(rèn)為當(dāng)前路徑
??? */
??? var $save_path = '';
???
??? /**
???? * 自定義文件名
??? */
??? var $define_name;???
???
??? /**
???? * 最終保存的文件名
??? */
??? var $name;
???
??? /**
???? * 文件大小，單位：字節(jié)
??? */
??? var $size;
???
??? /**
???? * 文件擴(kuò)展名，不包含"."
??? */
??? var $ext;????
???
??? /**
???? * 允許上傳的文件類型，默認(rèn)不限制
??? */
??? var $allow_ext = array();
???
??? /**
???? * 允許上傳的文件類型，默認(rèn)不限制
??? */
??? var $allow_size = false;
???
??? /**
???? * 如果已存在同名文件，是否允許覆蓋，默認(rèn)不覆蓋。
??? */
??? var $overwrite = false;
???
??? /**
???? * 錯(cuò)誤提示
??? */
??? var $error_code;
???
??? /**
???? * 構(gòu)造函數(shù)
??? */
??? public function __construct(){
??????? if(!is_uploaded_file($_files[$this->file_field]['tmp_name'])){
??????????? die("非法上傳！");
??????? }else{
??????????? $this->file_array = $_files[$this->file_field];
??????????? $this->name = $this->getpro('name');
??????????? $this->size = $this->getpro('size');
??????????? $this->ext = $this->getpro('ext');???
??????? }
??? }
???
???
??? /**
???? * 上傳操作函數(shù)
???? * @abstract??? 上傳成功返回 true , 否則返回相應(yīng)錯(cuò)誤代碼
???? * @return??????? string or bool
??? */
??? public function upload(){
??????? if(is_uploaded_file($this->file_array['tmp_name'])){???
???????????????
??????????? if(!empty($this->allow_ext)){
??????????????? if(!in_array($this->ext,$this->allow_ext)){
??????????????????? $this->error_code = "不允許上傳該類型文件！";???
??????????????????? return false;
??????????????? }
??????????? }
???????????
??????????? if(!@file_exists(iconv('utf-8','gbk',$this->save_path))){
??????????????? $this->error_code = "文件上傳目錄不存在！";
??????????????? return false;
??????????? }
???????????
??????????? if(!is_writable(iconv('utf-8','gbk',$this->save_path))){
??????????????? $this->error_code = "文件上傳目錄不可寫(xiě)入！";
??????????????? return false;
??????????? }
???????????
??????????? if($this->overwrite==false && @file_exists(iconv('utf-8','gbk',$this->save_path.$this->name))){
??????????????? $this->error_code = "該文件已存在！";
??????????????? return false;
??????????? }
???????????
??????????? if($this->allow_size){
??????????????? if($this->size > $this->allow_size){
??????????????????? $this->error_code = "文件大小超過(guò)系統(tǒng)限制！";
??????????????????? return false;
??????????????? }
??????????? }
???????????
??????????? $result = @move_uploaded_file($this->file_array['tmp_name'],iconv("utf-8","gbk",$this->save_path.$this->getpro("name")));???????????
??????????? if($result){
??????????????? return true;
??????????? }else{
??????????????? switch($this->file_array['error']){
??????????????????? case 1:
??????????????????????? $this->error_code = "上傳的文件超過(guò)了 upload_max_filesize 選項(xiàng)限制的值！";
??????????????????? break;
??????????????????? case 2:
??????????????????????? $this->error_code = "上傳文件的大小超過(guò)了 max_file_size 選項(xiàng)指定的值！";
??????????????????? break;
??????????????????? case 3:
??????????????????????? $this->error_code = "上傳過(guò)程被中斷！";
??????????????????? break;
??????????????????? case 4:
??????????????????????? $this->error_code = "沒(méi)有文件被上傳！";
??????????????????? break;
??????????????????? case 6:
??????????????????????? $this->error_code = "找不到臨時(shí)文件夾！";
??????????????????? break;
??????????????????? case 7:
??????????????????????? $this->error_code = "文件寫(xiě)入失?。?;
??????????????????? break;
??????????????? }
??????????????? return false;
??????????? }
??????? }
??? }
???
??? /**
???? * 上傳操作函數(shù)
???? * @abstract??? 獲取文件屬性
???? * @param??????? $itme:string類型，有效輸入為name(文件名)、ext(文件擴(kuò)展名)、size(文件大小)
???? * @return??????? string
??? */
??? public function getpro($item){
??????? switch($item){
??????????? case "name":
??????????????? $filename = $this->file_array['name'];
??????????????? return isset($this->define_name) ? $this->define_name.".".$this->ext : $filename;
??????????? break;???
??????????? case "ext":
??????????????? $filename = $this->file_array['name'];
??????????????? $filter = explode(".",$filename);
??????????????? return strtolower($filter[count($filter)-1]);
??????????? break;
??????????? case "size":
??????????????? return $this->file_array['size'];
??????????? break;
??????????? default:
??????????????? die("非法操作！");
??????????? break;
??????? }
??? }
}