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class upload {
private $file_name = ‘null’; #客户端文件名
private $file_size = 0; #文件大小
private $file_tmpName = ”; #临时文件夹路径
private $upload_type = array(‘jpg’,'jpeg’,'gif’,'png’); #允许上传的文件类型
private $upload_Ext = ‘null’; #文件后缀
private $upload_dir = ‘null’; #新路径
private $upload_name = ‘null’; #新文件名
private $upload_width = 0; #图片宽度
private $upload_height = 0; #图片高度
private $upload_msg = ”; #上传消息
private $upload_mode; #上传状态
/**
* 构造函数,自动上传
* @access public
* @param string $control 文件域控件名
* @param string $filePath 保存路径
* @param string $fileName 新文件名,不带后缀
* @param array $fileType 允许上传的文件后缀
* @param int $size 允许上传的文件大小,以字节为单位
*/
public function __construct($control=”,$filePath=”,$fileName=”,$fileType=”,$size=0) {
$this->upload_mode = true;
if($control==”)
$this->error(‘上传的文件域控件名不能为空’);
else{
$this->file_name=$_FILES[$control]['name'];
$this->file_size=$_FILES[$control]['size'];
$this->file_tmpName=$_FILES[$control]['tmp_name'];
if($fileType!=”)
$this->upload_type = $fileType;
if($filePath==”)
$this->upload_dir=’./’;
else
$this->upload_dir=$filePath;
if(!is_uploaded_file($this->file_tmpName))
$this->error(‘没有文件被上传’);
else{
if($size!=0&&$this->file_size>$size)
$this->error(‘上传的图片文件不能大于’.$this->getSize($size));
if(!$this->typeDetect($this->file_name))
$this->error(‘不支持上传此类型的文件’);
else{
if(!$this->fileDetect($this->file_tmpName))
$this->error(‘上传的图片文件无效或已经损坏’);
}
if($fileName==”)
$this->upload_name=$this->file_name;
else
$this->upload_name=$fileName.’.’.$this->upload_Ext;
}
}
//开始保存文件
if($this->mode)
$this->saveFile();
}
/**
* 获取属性
* @access public
* @param string 属性名
* @return 属性值
*/
public function __get($name){
switch($name){
case ‘path’:
return $this->upload_dir;
break;
case ‘name’:
return $this->upload_name;
break;
case ‘ext’:
return $this->upload_Ext;
break;
case ‘size’:
return $this->getSize($this->file_size);
case ‘width’:
return $this->upload_width;
break;
case ‘height’:
return $this->upload_height;
break;
case ‘mode’:
return $this->upload_mode;
break;
case ‘msg’:
return $this->upload_msg;
break;
}
}
/**
* 检测文件后缀名
* @access public
* @return bool
*/
private function typeDetect($OldFile){
$tempArr = explode(“.”, $OldFile);
$fileExt = array_pop($tempArr);
$fileExt = trim($fileExt);
$fileExt = strtolower($fileExt);
if(in_array($fileExt,$this->upload_type)){
$this->upload_Ext=$fileExt;
return true;
}
else
return false;
}
/**
* 检测上传文件是否是有效图片格式
* @access private
* @return bool
*/
private function fileDetect($tmpName){
$arr = getimagesize($tmpName);
if(!$arr){
return false;
}else{
$this->upload_width = $arr[0];
$this->upload_height = $arr[1];
return true;
}
}
/**
* 保存文件
* @access private
*/
private function saveFile(){
if(!is_dir($this->upload_dir)){
mkdir($this->upload_dir, 0777);
chmod($this->upload_dir, 0777);
}
$save_file = move_uploaded_file($this->file_tmpName,$this->upload_dir.$this->upload_name);
if(!$save_file)
$this->error(‘文件写入失败’);
else
$this->upload_msg=’文件上传成功’;
}
/**
* 获取文件大小
* @return string 返回B,KB,MB单位
*/
private function getSize($tmpSize){
$value = ‘B’;
if($tmpSize>1024){
$tmpSize = floor($tmpSize/1024);
$value = ‘KB’;
}
if($tmpSize>1024){
$tmpSize = round($tmpSize/1024,2);
$value = ‘MB’;
}
return $tmpSize.$value;
}
/**
* 错误提示
* @access private
* @param string $msg 错误信息
*/
private function error($msg=”){
$this->upload_msg .= $msg;
$this->upload_mode = false;
}
}
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