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---
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layout: post
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title: 如何利用MySQL数据库制作一个图站
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tags: [MySQL, 数据库, 图站, PHP]
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---
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最近白嫖了一个500GB的数据库，想想怎么利用一下？<!--more-->
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# Talk is cheap,show me the code
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数据库建表：
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```sql
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CREATE TABLE `FileUP` (
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`ID` int(11) NOT NULL AUTO_INCREMENT,
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`Name` text NOT NULL,
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`File` longblob NOT NULL,
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`Size` int(11) NOT NULL,
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PRIMARY KEY (`ID`)
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) ENGINE=InnoDB DEFAULT CHARSET=gb2312;
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```
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PHP代码：
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```php
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<?php
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$con=mysqli_connect("数据库地址","用户名","密码","数据库名");
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if (mysqli_connect_errno($con))
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{
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die("连接 MySQL 失败: " . mysqli_connect_error());
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}
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if ( $_GET[ID] != '' ) {
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header('Access-Control-Allow-Origin: *');
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$sql = "SELECT * FROM `FileUP` WHERE `ID` = '".addslashes($_GET[ID])."' ";
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$result = $con->query($sql);
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if ($result->num_rows > 0) {
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while($row = $result->fetch_assoc()){
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Header ( "Content-type: application/octet-stream" );
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Header ( "Accept-Ranges: bytes" );
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Header ( "Accept-Length: " . $row["Size"] );
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Header ( "Content-Disposition: attachment; filename=" . $row["Name"] );
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echo $row["File"];
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}
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}
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else {
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header('HTTP/1.1 404 NOT FOUND');
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}
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} else {
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echo '<title>Mayx图床</title>
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<h1>Mayx图床</h1><hr>
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请选择需要上传的文件
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<form enctype="multipart/form-data" method="post" action="">
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<input type="file" name="File" />
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<input type="submit" name="submit" value="submit" />
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</form>
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<br />';
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if ( $_SERVER['REQUEST_METHOD'] == "POST" ) {
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$error = $_FILES['File']['error'];
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$tmp_name = $_FILES['File']['tmp_name'];
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$size = $_FILES['File']['size'];
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$name = $_FILES['File']['name'];
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print("\n");
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if ($error == UPLOAD_ERR_OK && $size > 0) {
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$fp = fopen($tmp_name, 'r');
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$content = fread($fp, $size);
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fclose($fp);
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$content = addslashes($content);
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$sql = "INSERT INTO `FileUP` (`Name`, `File`, `Size`)
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VALUES ('".$name."', '".$content."', '".$size."');";
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$con->query($sql);
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$sql = "select @@identity;";
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$result = $con->query($sql);
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while($row = $result->fetch_assoc()) {
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echo '上传完成，文件下载地址：<a href="//'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']."?ID=".$row['@@identity'].'" >'.$_SERVER['HTTP_X_FORWARDED_PROTO'].'://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']."?ID=".$row['@@identity'].'</a>';
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}
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} else {
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echo "文件上传错误！";
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}
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}
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echo '<hr />
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<center><a href="https://mabbs.github.io/">By Mayx</a></center>';
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}
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mysqli_close($con);
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```
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# 缺点
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~~MySQL保存文件有限制，好像只能存16MB左右😓~~（改max_allowed_packet就可以了）
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另外就是断点续传的问题，这个问题我回头再想一想吧。
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# 演示（随时GG）
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<https://mayx.leanapp.cn/up.php>
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# 下一步改进的打算
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~~想搞成切片上传，这样就没有文件大小上传的限制了。
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不过这个好像得前端支持，先放个链接在这里吧：<https://github.com/fex-team/webuploader>~~
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不打算改进了……
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