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There have been a number of questions lately about storing images in a db table and then how to show them correctly. The problem is that the header for images needs to be set correctly for the binary data to be show correctly.
Here are the two working pages (tested my machine (xp, apache2, php4.3.9 mysql 4.01.x)
In the areas for the db query you will see the notation
$result = connect(sql);
connect is a custom function to handle all db interatction that is separate from the pages and included in the conn.php file. There is another example with that function in my previously posted code samples.
show_desc.php
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<?php
require("conn.php");
// you may have to modify login information for your database server
$query = "select description, id from binary_data ";
$result = connect($query);
while ($rows = MYSQL_FETCH_ARRAY($result)) {
echo $rows['description'];
echo "<br><br>";
echo "<img src=\"show_image.php?id=".$rows['id']."\">\n";
}
?> | |
show_image.php
| <?php
require("conn.php");
//check to see if the id is passed
if(isset($_GET['id'])) {
$id=$_GET['id'];
$query = "select bin_data, filetype from binary_data where id=$id";
//echo $query;
$result = connect($query);
$row = mysql_fetch_array($result);
{
$data = $row['bin_data'];
$type = $row['filetype'];
}
if ($type=="pjpeg") $type = "jpeg";
Header( "Content-type: $type");
echo $data;
}
?> | |
Database table:
| CREATE TABLE binary_data (
id INT(4) NOT NULL AUTO_INCREMENT PRIMARY KEY,
description CHAR(50),
bin_data LONGBLOB,
filename CHAR(50),
filesize CHAR(50),
filetype CHAR(50)
); | |
As always, these are simple samples only. There are many additions one could make to make this more robust and secure, from adding extension and mime type limitations to more db security. |
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| bookmarker - PHP, PHPLIB, MySQL WWW based bookmark manager
Categories : MySQL, PHP, MySQL, Complete Programs, Databases | | | This program allows you to upload an ODBC ressource - i.e. an MS-Access database to a MySQL server.
Categories : Databases, MySQL, Complete Programs, PHP, Databases | | | Identify and log search engine access (spiders, robots, etc.) to a page.
Categories : HTTP, Environment Variables, PHP, MySQL, Databases | | | A simple script to count and report hits and the last
modification time of an HTML page. Requires MySQL support
(other DBs should work too, except possibly mSQL).
Categories : HTTP, MySQL, PHP, Databases | | | create a grid out of <INPUT TYPE=TEXT> then saving to a database. Uses
a 'multi-dimension array', but not really as the array is just one big array
with the index of "[$i][$j]". Have a look at the code and you'll see what I
mean.
Categories : PHP, MySQL, Arrays, Databases | | | Password reminder
Categories : PHP, PHP Classes, Databases, MySQL, Mail | | | mediaCat-GTK v2.0.0 - an mp3/cd/dvd cataloging utility written in php-gtk which interfaces with mysql and ms access (or db supported by PHP's Unified ODBC Functions)
Categories : PHP, MySQL, MS Access, Utilities, Databases | | | Warning: Unknown(): A session is active. You cannot change the session module's ini settings at this time. in Unknown on line 0
Categories : PHP, Sessions, Databases, MySQL | | | Pull Down Surfing - Surf on Change
Categories : Java Script, MySQL, HTML and PHP, PHP, Databases | | | Online Automatic Class Generator for MySQL Tables
Categories : PHP, PHP Classes, Classes and Objects, Databases, MySQL | | | php-gtk mysql querying tool
Categories : PHP-GTK, MySQL, PHP, Databases | | | Simple conversion functions to change MySQL dates to arrays, arrays to MySQL dates.
Categories : PHP, Arrays, Date Time, Databases, MySQL | | | Specify your connection settings and create a link to a MySQL database.
Categories : PHP, PHP Classes, Databases, MySQL, Beginner Guides | | | dynamic table columns
Categories : PHP, HTML and PHP, Arrays, Databases, MySQL | | | A template script to provide the ability to get the next or previous n records from a MySQL database.
Categories : Databases, PHP, MySQL | |
| | | | matthew waygood wrote : 1265
You could also check if the entry exists before outputting the header and content.
And check the id is valid, or even force it to be valid with the following:-
$id=ereg_replace("[^0-9]","",urldecode($_GET[`id`]));
// remove all non number values from the id
| | | | Boaz Yahav wrote :1633
What is the deal with :
{
$data = $row[`bin_data`];
$type = $row[`filetype`];
}
in show_image.php
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