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161 lines
4.2 KiB
161 lines
4.2 KiB
<?php
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/**
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* 上传类
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*/
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namespace libraries;
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class Upload {
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/**
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* 上传配置
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* @var array
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*/
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protected $config = array(
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'maxSize' => 1048576, //上传的文件大小限制 默认10M
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'allowExts' => array(), //允许的文件后缀
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'rootPath' => './upload/', //上传根路径
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'savePath' => '', //保存路径
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'saveRule' => 'md5_file', //命名规则
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'driver' => 'Local',
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'driverConfig' => array(),
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);
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/**
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* 上传文件信息
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* @var array
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*/
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protected $uploadFileInfo = array();
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/**
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* 错误消息
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* @var string
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*/
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protected $errorMsg = '';
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/**
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* 构建函数
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* @param array $config 上传配置
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*/
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public function __construct($config = array()) {
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$this->config = array_merge($this->config, $config);
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$this->setDriver();
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}
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/**
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* 上传配置
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* @param string $key 上传字段
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* @return boolean
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*/
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public function upload($key = '') {
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if(empty($_FILES)) {
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$this->errorMsg = '没有文件上传！';
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return false;
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}
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if(empty($key)) {
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$files = $_FILES;
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} else {
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$files[$key] = $_FILES[$key];
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}
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//上传根目录检查
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if(!$this->uploader->rootPath($this->config['rootPath'])){
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$this->errorMsg = $this->uploader->getError();
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return false;
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}
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//上传目录检查
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$savePath = $this->config['rootPath'] . $this->config['savePath'];
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if(!$this->uploader->checkPath($savePath)){
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$this->errorMsg = $this->uploader->getError();
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return false;
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}
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$num = 0;
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foreach($files as $key =>$file) {
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if( $file['error'] == 4 ) continue;
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$saveRuleFunc = $this->config['saveRule'];
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$pathinfo = pathinfo($file['name']);
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$file['key'] = $key;
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$file['extension'] = strtolower( $pathinfo['extension'] );
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$file['savepath'] = $savePath;
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$file['savename'] = $saveRuleFunc( $file['tmp_name'] ) . '.' . $file['extension'];
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$file['driver'] = $this->config['driver'];
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//检查文件类型大小和合法性
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if (!$this->check($file)) {
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return false;
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}
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//存储文件
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$info = $this->uploader->saveFile($file, $config);
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if(!$info){
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$this->errorMsg = $this->uploader->getError();
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return false;
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}
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$this->uploadFileInfo[$num] = $info;
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$this->uploadFileInfo[$key] = $info;
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}
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return true;
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}
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/**
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* 检测文件合法性
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* @param string $file 文件名
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* @return boolean
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*/
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protected function check($file) {
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//文件上传失败
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if($file['error'] !== 0) {
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$this->errorMsg= '文件上传失败！';
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return false;
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}
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//检查文件类型
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$this->allowExts = array_map('strtolower', $this->config['allowExts']);
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if( !in_array($file['extension'], $this->config['allowExts'])) {
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$this->errorMsg = '上传文件类型不允许！';
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return false;
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}
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//检查文件大小
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if ($file['size'] > $this->config['maxSize']) {
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$this->errorMsg = '上传文件大小超出限制！';
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return false;
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}
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//检查是否合法上传
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if(!is_uploaded_file($file['tmp_name'])) {
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$this->errorMsg = '非法上传文件！';
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return false;
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}
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// 如果是图像文件 检测文件格式
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if( in_array($file['extension'], array('gif','jpg','jpeg','bmp','png','swf')) && false === getimagesize($file['tmp_name']) ) {
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$this->errorMsg = '非法图像文件！';
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return false;
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}
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//检查通过，返回true
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return true;
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}
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/**
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* 设置驱动
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*/
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protected function setDriver() {
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$uploadDriver = __NAMESPACE__.'\upload\\' . ucfirst( $this->config['driver'] ).'Driver';
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$this->uploader = new $uploadDriver($this->config);
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if(!$this->uploader){
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throw new \Exception("Upload Driver '{$this->config['driver']}' not found'", 500);
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}
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}
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/**
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* 获取上传文件信息
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* @return array
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*/
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public function getUploadFileInfo() {
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return $this->uploadFileInfo;
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}
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/**
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* 获取框架错误
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* @return string
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*/
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public function getError(){
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return $this->errorMsg;
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}
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}
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