PHP implements file upload, php file upload plug-in, php multi-file upload plug-in, php ftp upload file

The tools are as follows:

maxSize = $maxSize;
			$this->allowMime = $allowMime;
			$this->allowExt = $allowExt;
			$this->uploadPath = $uploadPath;
			$this->imgFlag = $imgFlag;
			$this->init();
		}

		private function init() {
			$this->fileInfo = array();
			foreach ($_FILES as $k => $v) {
				$this->fileInfo = $v;
			}
			
			if (!empty($this->fileInfo)) {
				$this->ext = strtolower(pathinfo($this->fileInfo['name'], PATHINFO_EXTENSION));
			}
			
		}

		/**
		* 上传文件
		* @return 如果上传失败那么就返回false，如果上传成功，那么返回路径
		*/
		public function uploadFile() {
			if (!$this->checkError() || !$this->checkSize() || !$this->checkHTTPPost() || !$this->checkTrueImg()) {
				return false;
			}
			if (!empty($this->allowExt) && !$this->checkExt()) {
				return false;
			}
			if (!empty($this->allowMime) && !$this->checkMime()) {
				return false;
			}
			$this->checkUploadPath();
			$this->uniName = $this->getUniName();
			$this->destination = $this->uploadPath . '/' . $this->uniName . '.' . $this->ext;
			if (!@move_uploaded_file($this->fileInfo['tmp_name'], $this->destination)) {
				return false;
			}
			return $this->destination;
		}

		/**
		* 获取错误信息
		*/
		public function getError() {
			return $this->error;
		}

		/**
		* 检测上传文件是否出错
		* @return boolean
		*/
		private function checkError() {

			if (empty($this->fileInfo)) {
				$this->error = '文件上传出错';
				$this->code = 1001;
				return false;
			}
			
			if ($this->fileInfo['error'] == 0) {
				return true;
			}

			switch ($this->fileInfo['error']) {
				case 1:
					$this->error = '超过了PHP配置文件中upload_max_filesize选项的值';
					$this->code = 1002;
					break;
				case 2:
					$this->error = '超过了表单中MAX_FILE_SIZE设置的值';
					$this->code = 1003;
					break;
				case 3:
					$this->error = '文件部分被上传';
					$this->code = 1004;
					break;
				case 4:
					$this->error = '没有选择上传文件';
					$this->code = 1005;
					break;
				case 6:
					$this->error = '没有找到临时目录';
					$this->code = 1006;
					break;
				case 7:
					$this->error = '文件不可写';
					$this->code = 1007;
					break;
				case 8:
					$this->error = '由于PHP的扩展程序中断文件上传';
					$this->code = 1008;
					break;
			}
			return false;
		}

		/**
		* 检测上传文件的大小
		* @return boolean
		*/
		private function checkSize() {
			if ($this->fileInfo['size'] > $this->maxSize) {
				$this->error = '上传文件过大';
				$this->code = 1009;
				return false;
			}
			return true;
		}

		/**
		* 检测扩展名
		* @return boolean
		*/
		private function checkExt() {
			if (!in_array($this->ext, $this->allowExt)) {
				$this->error = '不允许的扩展名';
				$this->code = 1010;
				return false;
			}
			return true;
		}

		/**
		* 检测文件类型
		* @return boolean
		*/
		private function allowMime() {
			if (!in_array($this->fileInfo['type'], $this->allowMime)) {
				$this->error = '不允许的文件类型';
				$this->code = 1011;
				return false;
			}
			return true;
		}

		/**
		* 检测是否是真实图片
		* @return boolean
		*/
		private function checkTrueImg() {
			if ($this->imgFlag) {
				if (!@getimagesize($this->fileInfo['tmp_name'])) {
					$this->error = '不是真实图片';
					$this->code = 1012;
					return false;
				}
				return true;
			}
			return true;
		}

		/**
		* 检测是否通过HTTP POST方式上传的
		* @return boolean
		*/
		private function checkHTTPPost() {
			if (!is_uploaded_file($this->fileInfo['tmp_name'])) {
				$this->error = '文件不是通过HTTP POST方式上传的';
				$this->code = 1013;
				return false;
			}
			return true;
		}

		/**
		* 检测目录不存在，则创建
		*/
		private function checkUploadPath() {
			if (!file_exists($this->uploadPath)) {
				mkdir($this->uploadPath, 0777, true);
			}
		}

		/**
		* 产生唯一字符串
		* @return string
		*/
		private function getUniName() {
			return md5(uniqid(microtime(true), true));
		}


	}
 ?>

	
	



	

		上传：
		

		
	

uploadFile();
	if (!($destination === false)) {
		echo "$destination";
	}
	echo $uploadHelper->getError();
 ?>

The above introduces the implementation of file upload in PHP, including file upload and PHP content. I hope it will be helpful to friends who are interested in PHP tutorials.