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