又花了半天時間寫了個php上傳類解決方案

又花了半天時間寫了個php上傳類
剛學PHP沒多久，為了更好的練習及熟悉PHP，自己花了大半天寫了個php上傳類，在這裡做個筆記，歡迎朋友們對這個類做修改及最佳化。

PHP code

//up_class.php     * $upFolder(儲存到伺服器的檔案夾);
     * $isRename(對上傳檔案重新命名，值 有 y|n );
     * $reType(上傳成功後返回的值：n是返迴文件名,pn:返迴路徑和檔案名稱,j:返回js[待擴充]);
     * $upExt(要上傳的檔案分類,因為在不同的表單要限制不同的上傳檔案類型，比如 A表單只能上傳圖片，B表單只能上偉壓縮包);
     * $maxSize(限制上傳的檔案大小)
     * @author:256kb     * @2012-5-1     */    public function __construct($inputFile , $upExt = 0 , $reType = 'pn' , $upFolder = 'upload/' , $isRename = 'y' , $maxSize = 10485760){        $this->inputFile = $inputFile;        $this->reType = $reType;        $this->upMaxSize = $maxSize;        $this->allowFile = $upExt;        $this->upFolder = $upFolder;        $this->isReName = $isRename;        //$this->errorInt = -1;    }        public function upFile(){        $_file_arr = $_FILES[$this->inputFile];        $this->errorInt = $_file_arr['error'];        if(is_uploaded_file($_file_arr['tmp_name'])){            if($_file_arr['tmp_name']){                $this->tmpName = $_file_arr['name'];                $this->upMaxSize = $_file_arr['size'];                $this->fileType = $_file_arr['type'];                $this->tmpPath = $_file_arr['tmp_name'];                $this->fileSize = $_file_arr['size'];                if($this->upMaxSize > $this->upMaxSize){                    $this->errorInt = 6    ;    //大小超出網站限制                }                                if(!$this->isAllow()){                    $this->errorInt = 8    ;    //系統不允許此類型檔案                }                                if($this->isReName=='y'){                    $this->savePath = $this->upFolder.$this->getFolder().'/'.$this->getNewName() ;                    $this->endFileName = $this->getNewName();                }else{                    $this->savePath = $this->upFolder.$this->getFolder().'/'.$this->tmpName ;                    $this->endFileName = $this->tmpName;                }                //echo $this->errorInt;                if(!$this->errorInt >= 1){                    move_uploaded_file($this->tmpPath,$this->savePath);                }                            }        }    }        public function getFileUrl(){        switch($this->reType){            case 'n':                return $this->endFileName;            break;            case 'pn':                return $this->savePath;            break;            case 'js':                return "";            break;            default:                return $this->savePath;        }    }        //獲得新檔案名稱    public function getNewName(){        return substr($this->tmpName,1,strrpos($this->tmpName,".")-1).'_'.mktime().'.'.$this->getFileExt();    }        public function upStatus(){        //echo $this->errorInt;        switch ($this->errorInt){            case 1:                return '超過了檔案大小php.ini中限制大小';            break;            case 2:                return '超過了檔案大小MAX_FILE_SIZE 選項指定的值';            break;            case 3:                return '檔案只有部分被上傳';            break;            case 4:                return '沒有檔案被上傳';            break;            case 5:                return '上傳檔案大小為0';            break;            case 6:                return '大小超出網站限制';            break;            case 7:                return '網站內沒有指定這種上傳類型';            break;            case 8:                return '系統不允許此類型檔案';            case 9:                return '建立目錄失敗！';            break;        }    }        private function isAllow(){        $allow = array(                0 => array('image/jpg','image/jpeg','image/png','image/pjpeg','image/gif','image/bmp','image/x-png','application/x-zip-compressed','application/octet-stream'),                1 => array('image/jpg','image/jpeg','image/png','image/pjpeg','image/gif','image/bmp','image/x-png'),                2 => array('application/x-zip-compressed','application/octet-stream'),                3 => array('','',''),                4 => array('','','')                );        if($this->allowFile > count($allow)-1){            $this->errorInt = 7;    //網站內沒有指定這種上傳類型        }else{            if(in_array($this->fileType, $allow[$this->allowFile])){                return true;            }else{                return false;            }        }    }        public function getFileExt(){    //獲得副檔名        return strtolower(substr($this->tmpName,strrpos($this->tmpName,".")+1));    }        private function getFolder(){    //獲得並自動建立相應檔案夾        if(strpos('|rar|zip|7z|iso|','|'.$this->getFileExt().'|')>=0){            $_folder = 'rar';        }elseif(strpos('|gif|jpeg|jpg|png|bmp|pjpeg|psd|','|'.$this->getFileExt().'|')>=0){            $_folder = 'img';        }elseif(strpos('|rm|rmvb|avi|mp4|swf|flv|wmv|','|'.$this->getFileExt().'|')>=0){            $_folder = 'vide';        }elseif(strpos('|doc|txt|xls|mdb||','|'.$this->getFileExt().'|')>=0){            $_folder = 'doc';        }else{            $_folder = 'other';        }        if(!file_exists($this->upFolder.$_folder)){            if(!mkdir($this->upFolder.$_folder)){                $this->errorInt = 9;    //建立目錄失敗            }        }        return $_folder;    }    }
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