最新的文件上传模型，支持多文件上传

来源：互联网发布：软件开发专业怎么样编辑：程序博客网时间：2024/04/30 13:03

为 MayFish 重新封装的一个文件上传类，支持多个文件同时上传，设置允许的上传文件类型和文件大小。

<?phpclass UploadModel{protected $keys;protected $err = array();protected $target;protected $exts;protected $maxSize;protected $randName;protected $files = array();/** * 初始化变量 */public function __construct(){$this->exts = array('jpeg','jpg','gif','png','zip','rar');$this->maxSize = 1024*1024*2;$this->target = dirname(__FILE__) . '/upload/';$this->randName = true;$this->keys = $this->getKeys();}/** * 获取 file 的名称 */protected function getKeys(){$keys = array_keys($_FILES);return $keys;}/** * 设置不同类型的变量 */public function __set($name, $value){$property = array('target','exts','maxSize','randName');if(!in_array($name, $property)) return false;switch(strval($name)){case 'target':$this->$name = Configure::read('app_path') . $value;break;case 'exts':$this->$name = explode(',', $value);break;case 'randName':if($value === true || $value == 1){$this->$name = true;}else {$this->$name = false;}break;default:$this->$name = $value;}}/** * 移动上传的文件到指定的目录 * @param $fileName 移动单个文件名称的时候，对上传的文件重新命名 */public function save($fileName){$this->err = array();$this->files = array();if(!file_exists($this->target)) {mkdir($this->target);chmod($this->target, 0777);}foreach($this->keys as $key){if(is_array($_FILES[$key]['name'])){$count = count($_FILES[$key]['name']);for($i=0; $i<$count; $i++){$keys = array_keys($_FILES[$key]);foreach($keys as $item){$file[$item] = $_FILES[$key][$item][$i];}$this->upload($file, $fileName);}return (count($this->err) > 0)? false:true; }else {return $this->upload($_FILE[$key], $fileName);}}}/** 内部处理上传文件的过程 */protected function upload($file, $fileName){if(!is_uploaded_file($file['tmp_name'])) return false;if(!$this->checkExt($file)) return false;if(!$this->checkSize($file)) return false;if($this->randName){$newFileName = $this->target . date('YmdHis', time()) . rand(0,9) . '.' . $this->getExt($file['name']);}elseif(empty($fileName)){$newFileName = $this->target . '/' . $file['name'];}else {$newFileName = $this->target . '/' . $fileName;}$result = move_uploaded_file($file['tmp_name'], $newFileName);if(!$result){return false;}else {$this->files[] = str_replace($this->target, $newFileName);return true;}}/** * 是否是可上传的文件类型 * @param $file 文件对象 */public function checkExt($file){if(!in_array($this->getExt($file['name']), $this->exts)){$this->err[] = $file['name'].':ext';return false;}else {return true;}}/** * 获取文件后缀名 */public function getExt($fileName){$pos = strrpos($fileName, '.')+1;return substr($fileName, $pos);}/** * 检查文件大小是否合法 */public function checkSize($file){if($size > $this->maxSize){$this->err[] = $file['name'].':max';return false;}else {return true;}}/** * 取得已经上传的文件名称 */public function getFiles(){return $this->files;}}

使用实例：

include 'uploaded.model.php';$U = new UploadModel();$U->target = '/tmp/';$U->exts = 'jpg,gif';$U->maxSize = 1024*275; //275KB$U->save();$files = $U->getFiles();print_r($files);

在 MayFish 里的使用实例：

public function up(){$U = M('SYS', 'upload');$U->target = '/tmp/';$U->exts = 'jpg,gif';$U->maxSize = 1024*275; //275KB$U->save();header('Location:/?a=upload');}

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>无标题文档</title></head><body><form action="/?a=up" method="post" enctype="multipart/form-data"><input name="files[]" type="file" size="30" /><input name="files[]" type="file" size="30" /><input type="submit" value="开始上传" /></form></body></html>