如何从 MySQL 数据库中存储和检索图像并使用 Php 在 html 中显示它？
[英]How to store and retrieve image from MySQL database and display it in html using Php?
问题描述
i need to display list of image from MySQL database and display the image.
我需要显示来自 MySQL 数据库的图像列表并显示图像。 here my sample code its working for insertion but it does not display anything..can anyone please help me..在这里，我的示例代码可用于插入，但没有显示任何内容..任何人都可以帮助我..
$file = fopen("switch.jpg", "rb");
$image = fread($file, filesize('switch.jpg'));
$image = base64_encode($img);
$ins_query="INSERT INTO mytable (id,imag) "."VALUES ('','$img')";
mysql_query($ins_query)or die('Error in query !');
$id1=1;
echo "inserted ";
$query="select imag from mytable where id='$id1'";
$result=mysql_query($query) or die("Error: ".mysql_error());
$row=mysql_fetch_array($result);
echo '<img src="data:image/jpeg;base64',base64_encode($row['imag']).'"/>';
fclose($file);
3 个解决方案
解决方案1
0 2014-05-02 05:43:23
You're doing two things wrong:你做错了两件事：
- Missing
,after data:image/jpeg;base64缺失,在数据之后：图像/jpeg;base64 - Re-encoding base64 data重新编码 base64 数据
So, here is my fix, try this:所以，这是我的修复，试试这个：
...
echo '<img src="data:image/jpeg;base64,',base64_decode($row['imag']).'"/>';
fclose($file);
解决方案2
-2 2014-05-02 05:11:05
Instead of saving binary data in database , try to store image path or file name in database.尝试将图像路径或文件名存储在数据库中，而不是将二进制数据保存在数据库中。 Store image in your system folder.将图像存储在您的系统文件夹中。 This could be much more faster这可能会更快
In order to fetch the image , just fetch the image path or name and show it in your html page为了获取图像，只需获取图像路径或名称并将其显示在您的 html 页面中
echo '<img src="<?php echo FULL_BASE_URL.'/'.$imagePathfromDB; ?>"/>';
In your case if ID is auto incremented then , don't insert it .在您的情况下，如果 ID 是自动递增的，则不要插入它。 it will automatically gets inserted它会自动插入
解决方案3
-2 2014-05-02 05:11:29
<?php
$number_of_thumbs_in_row = 4;
$result = mysql_query( "SELECT photo_id,photo_caption,photo_filename,photo_category FROM gallery_photos");
while( $row = mysql_fetch_array( $result ) )
{
$result_array[] = "<img src='".$images_dir."/tb_".$row[2]."' border='0' alt='".$row[1]."'/><br>$row[1]<br>$row[3]<br>$row[0]";
}
mysql_free_result( $result );
$result_final = "<tr valign='top' align='center' class='style1'>\n";
foreach($result_array as $thumbnail_link)
{
if($counter == $number_of_thumbs_in_row)
{
$counter = 1;
$result_final .= "\n</tr align='center' class='style1'>\n<tr align='center' class='style1'>\n";
}
else
$counter++;
$result_final .= "\n<td class='style1'>".$thumbnail_link."</td>\n";
}
if($counter)
{
if($number_of_photos_in_row==$counter)
$result_final .= "\n<td class='style1' colspan='".($number_of_photos_in_row=$counter)."'></td>\n";
$result_final .= "</tr>";
}
}
echo <<<__HTML_END
<html>
<head>
<title>Gallery View</title>
</head>
<body>
<table width='100%' border='0' cellpadding="10" cellspacing="10">
$result_final
</table>
</body>
</html>
__HTML_END;
?>
Just go through this article .只是通过这篇文章。
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