PHPCode/upload.class.php at master · Ronlee12355/PHPCode · GitHub

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<?php
	namespace Uploads;
	class upload{
		protected $fileName;
		protected $uploadPath;
		protected $error;
		protected $ext;
		protected $allowMime;
		protected $allowExt;
		protected $imgFlag;
		protected $fileInfo;
		protected $maxSize;
		protected $destination;
		public function __construct($fileName='myFile',$uploadPath='./uploads',$maxSize=5555555555,$imgFlag=true,$allowExt=array('image/jpg','image/jpeg','image/png','image/gif'),$allowExt=array('jpg','jpeg','gif')){
			$this->fileName=$fileName;
			$this->uploadPath=$uploadPath;
			$this->allowExt=$allowExt;
			$this->allowMime=$allowMime;
			$this->imgFlag=$imgFlag;
			$this->maxSize=$maxSize;
			$this->fileInfo=$_FILES[$this->fileName];
		}
		public function checkError(){
			if(!is_null($this->fileInfo)){
				if($this->fileInfo['error']>0){
				switch($this->fileInfo['error']){
					case 1:
						$this->error='超过了PHP配置文件中upload_max_filesize选项的值';
						break;
					case 2:
						$this->error='超过了表单中MAX_FILE_SIZE设置的值';
						break;
					case 3:
						$this->error='文件部分被上传';
						break;
					case 4:
						$this->error='没有选择上传文件';
						break;
					case 6:
						$this->error='没有找到临时目录';
						break;
					case 7:
						$this->error='文件不可写';
						break;
					case 8:
						$this->error='由于PHP的扩展程序中断文件上传';
						break;

				}else{
					return true;
				}
			}
			}else{
				$this->error='文件上传出错';
				return false;
			}

		}
		public function checkSize(){//检查文件大小错误
			if($this->fileInfo['size']>$this->maxSize){
				$this->error='上传文件过大';
				return false;
			}else{
				return true;
			}
		}

		public function checkExt(){//检查文件拓展名错误
			$this->ext=strtolower(PATHINFO($this->fileInfo['name'],PATHINFO_EXTENSION));
			if(!in_array($this->ext,$this->allowExt)){
				$this->error='文件类型有误';
				return false;
			}else{
				return true;
			}
		}

		public function checkHTTP(){//检查文件是否通过http方式上传
			if(!is_uploaded_file($this->fileInfo['tmp_name'])){
				$this->error='文件不是通过POST方法上传的';
				return false;
			}else{
				return true；
		}

		public function checkMime(){//检查文件类型
			if(!in_array($this->fileInfo['type'],$this->allowMime)){
				$this->error='不允许的文件类型';
				return false;
			}else{
				return true;
			}
		}

		public function checkFile(){//检查文件是不是图片
			if($imgFlag){
				if(!@getimagesize($this->fileInfo['tmp_name'])){
				$this->error='不是文件';
				return false;
			}else{
				return true;
			}
		}else{
			return false;
		}
	}

		public function checkDir(){//检查文件上传文件夹是否在，不在就建立一个
			if(!isset($this->uploadPath)){
				mkdir($this->uploadPath,0777,ture);
			}
		}

		protected function getUniqName(){//获得上传唯一文件名称
			return md5(uniqid(microtime(true)),true);
		}

		protected function showError(){//报告错误
			echo '<script type="text/javascript">alter({$this->error});</script>';
		}

		public function uploadFile(){//文件上传主方法
			if($this->checkError()&&$this->checkSize()&&$this->checkExt()&&$this->checkMime()&&$this->checkFile()&&$this->checkHTTP()){
				$this->uploadPath=$this->checkDir();

				$this->destination=$this->uploadPath.'/'.$this->getUniqName().'.'.$this->ext;
				if(move_uploaded_file($this->fileInfo['tmp_name'],$this->destination)){
					return $this->destination;
				}else{
					$this->error='文件移动失败';
					$this->showError();
				}
			}else{
				$this->showError();
			}
		}
	}

?>