From 16ca3d7e5fb92a61acc0db1dabc9b692082a397e Mon Sep 17 00:00:00 2001
From: Li Jianxuan <la5c@qq.com>
Date: Fri, 25 Nov 2011 08:55:47 +0000
Subject: [PATCH] =?UTF-8?q?=E5=9C=A8files=E6=96=87=E4=BB=B6=E7=B1=BB?=
 =?UTF-8?q?=E4=B8=AD=E5=A2=9E=E5=8A=A0=E4=BA=86=E5=8D=95=E4=B8=AA=E9=99=84?=
 =?UTF-8?q?=E4=BB=B6=E4=BF=A1=E6=81=AF=E8=AF=BB=E5=8F=96=E5=87=BD=E6=95=B0?=
 =?UTF-8?q?=EF=BC=8C=E5=A2=9E=E5=8A=A0=E4=BA=86=E5=9B=BE=E7=89=87=E9=99=84?=
 =?UTF-8?q?=E4=BB=B6=E7=9A=84mime=E7=B1=BB=E5=9E=8B=E5=88=A4=E6=96=AD?=
 =?UTF-8?q?=E5=87=BD=E6=95=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 application/models/files.php | 67 ++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)

diff --git a/application/models/files.php b/application/models/files.php
index ee7d3224..99fab011 100644
--- a/application/models/files.php
+++ b/application/models/files.php
@@ -142,6 +142,73 @@ class files{
 		}
 	}//文件上传
 	
+	/**
+	* getOne()
+	*
+	* 从数据库获取单个文件的信息
+	*
+	* @param int id
+	*
+	* return array
+	*/
+	static function getOne($db,$id){
+		//下载单个附件
+		$sql = $db->quoteInto("select a.* from attachments a where a.id=? order by a.ts_created desc",$id);
+		$att = $db->fetchRow($sql);
+		if(empty($att['id']))
+		{	$att['error']=='文件不存在';}
+		return $att;
+	}
+	
+	
+	static  function getImageType($filename)
+	 {
+	  
+	  //通过mime判断是否是真正的图片
+	  
+	  $finfo = finfo_open(FILEINFO_MIME_TYPE);
+	  $mime = finfo_file($finfo, $filename); 
+	  finfo_close($finfo);
+	  $type = $mime;
+	  if(!in_array($type,array('image/jpeg','image/png')))
+	  {
+		  return array('error'=>'F');
+	  }else{
+	  switch ($type){
+	   case 'image/jpeg':
+	   $image_create_func = 'imagecreatefromjpeg';
+	   $image_save_func = 'imagejpeg';
+	   $new_image_ext='jpg';
+	   $quality = 100;
+	   break;
+	   case 'image/gif':
+	   $image_create_func = 'imagecreatefromgif';
+	   $image_save_func = 'imagegif';
+	   $new_image_ext = 'gif';
+	   break;
+	   case 'image/png':
+	   $image_create_func = 'imagecreatefrompng';
+	   $image_save_func = 'imagepng';
+	   $new_image_ext = 'png';
+	   $quality = 100;
+	   break;
+	   default:
+	   $image_create_func = 'imagecreatefromjpeg';
+	   $image_save_func = 'imagejpeg';
+	   $new_image_ext='jpg';
+	   $quality = 100;
+	   }
+	   
+	   $downloadcfg = array('creatfunc'=>$image_create_func,
+			 'savefunc'=>$image_save_func,
+			 'ext'=>$new_image_ext,
+			 'mime'=>$mime,
+			 'quality'=>$quality);
+	   
+	   return $downloadcfg;
+	  }
+	   
+	 }//function getimagetype
 	
 	
 	/**