图片存储与浏览一例(Linux+Apache+PHP+MySQL)

注意本程序使用的表结构为:
use test;
create table image(
id int unsigned auto_increment primary key,
description text,
filename varchar(50),
filesize int,
filetype varchar(50),
filedata longblob
);
*/

//?cmd={read|list|form|store}

//检查cmd参数的合法性
switch($cmd){
case 'read':
break;
case 'list':
break;
case 'form':
break;
Case 'store':
break;
default:
$cmd = 'list';
break;
}

switch($cmd){
case 'read':
//?cmd=read&id;={}
//读一个图片
$server = mysql_connect("localhost","test","") or die("无法连接数据库服务器");
mysql_select_db("test",$server) or die("无法连接数据库");
$sql = "select filetype,filedata from image where id='$id'";
$rst = mysql_query($sql,$server) or die("$sql查询出错");
if($row=mysql_fetch_row($rst)){
header("Content-Type:" . $row[0]);
echo $row[1];
}
else{
echo "没有找到该记录";
}
mysql_free_result($rst);
mysql_close($server) or die("无法与数据库服务器断开连接");
break;
case 'list':
//?cmd=list
//显示所有图片
echo '';
echo '';
echo '';
echo '显示所有图片';
echo " ";
echo '上传图片';
$server = mysql_connect("localhost","test","") or die("无法连接数据库服务器");
mysql_select_db("test",$server) or die("无法连接数据库");
$sql = "select id,description,filename,filetype,filesize from image";
$rst = mysql_query($sql,$server) or die("$sql查询出错");
while($row=mysql_fetch_row($rst)){
echo "

---

";
echo "描述:" . $row[1] . "
";
echo "文件名:" . $row[2] . "
";
echo "类型:" . $row[3] . "
";
echo "大小:" . $row[4] . "
";
echo '';
}
mysql_free_result($rst);
mysql_close($server) or die("无法与数据库服务器断开连接");
echo '';
echo '';
break;
case 'form':
?>

描述:

文件:

<?
break;
case 'store':
//?cmd=store&description;={}&file;={}&file;_size={}&file;_type={}&file;_name={}
//存储图片
echo '';
echo '';
echo '';
echo '显示所有图片';
echo " ";
echo '上传图片';
$server = mysql_connect("localhost","test","") or die("无法连接数据库服务器");
mysql_select_db("test",$server) or die("无法连接数据库");
$data = addslashes(fread(fopen($file,"r"),filesize($file)));
$sql = "insert into image(description,filename,filetype,filesize,filedata)
values('$description','" . basename($file_name) . "','$file_type',$file_size,'$data')";
mysql_query($sql,$server) or die("$sql执行出错");
$id = mysql_insert_id();
echo "

---

你上传的图片效果:
";
echo '';
mysql_close($server) or die("无法与数据库服务器断开连接");
echo '';
echo '';
break;
}
?>