如何使用php脚本将图像上传到数据库？ [英] How to upload an image to a database using php script?
本文介绍了如何使用php脚本将图像上传到数据库？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
这里是我上传的代码..但它不工作..我使用了一个file_get_contents函数..
上传图片
here is the code for my upload.. but it doesn't work.. I've used a file_get_contents function.. Upload image
</head>
<body>
<form action="upload1.php" method="POST" enctype="multipart/form-data">
File:
<input type="file" name="image"/>
<input type="submit" value="Upload image" />
</form>
<?php
//connect to the database
$con = mysql_connect("localhost","root", "");
if(!$con)
{
die('Could not connect to the database:' . mysql_error());
echo "ERROR IN CONNECTION";
}
mysql_select_db("imagedatabase", $con);
//file properties
echo $file = $_FILES['image']['tmp_name'];
echo '<br />';
if(!isset($file))
echo "Please select an image";
else
{
$image = file_get_contents($_FILES['image']['tmp_name']);
echo $image_name = addslashes($_FILES['image']['name']); echo '<br \>';
echo $image_size = getimagesize($_FILES['image']['tmp_name']);
if($image_size == FALSE)
echo "That's not an image";
else
{
$insert = mysql_query("INSERT INTO images (image) VALUES ($image)",$con);
if(!$insert)
echo "Problem uploding the image. Please check your database";
else
{
$last_id = mysql_insert_id();
echo "Image Uploaded. <p /> Your image: <p /><img src=display.php? id=$last_id>";
}
}
}
mysql_close($con);
?>
</body>
</html>
，并且检索/显示的代码以这种方式。
and the code for the retrieve/display goes this way..
<?php
//connect to the database
mysql_connect("localhost","root", "") or die(mysql_error());
mysql_select_db("mydb") or die(mysql_error());
//requesting image id
$id = addslashes($_REQUEST['id']);
$image = mysql_query("SELECT * FROM images WHERE id = $id");
$image = mysql_fetch_assoc($image);
$image = $image['image'];
header("Conten-type: image/jpeg");
echo $image;
mysql_close($connect);
?>
我创建了一个名为imagedatabase和表格的数据库
I've created a database named 'imagedatabase' and a table
推荐答案
在数据库中存储图像是个坏主意。
That's a bad idea to store an image in database. Store a path to it in database, close directory with images via .htaccess and use it on a hard drive.
如果您将使用DB存储图像，您将拥有：
If You'll use DB to store images You will have:
- 慢查询
- 灾难性索引大小
- - > mysql
- 编辑照片时出现问题（您需要获取图片，修改某些内容
，然后重新插入所有数据哦 - 从一个地方传输文件到另一个地方的问题
- StackOverflow的新问题«如何处理文件，如果他们不是
文件，但字符串»
- slow queries
- catastrophic indexes' size
- high load on bridge php<->mysql
- problems with edit photos(You'll need to get image, modify something and insert all data again. Ohh nooo)
- problems with transfer files from one place to another
- new question on StackOverflow «How to work with files if them not files, but a string»
这篇关于如何使用php脚本将图像上传到数据库？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
