Uploading/Downloading files stored in MySQL database

Posted on 16th Feb 2014 07:03 pm by admin

Hey all,

This problem just came up in my website and I'm having a hard time figuring out what's wrong. I have a intranet portal running (custom built) and I'm storing all different types of documents in a mysql database. Previously, I was able to read the contents of the file into the DB and then pull it out and the file would open just fine. Now, for some reason, everything except PDF files come across as gibberish.

I've gone ahead and tried to upload files that I know are working, I've switched from base64_encode to addslashes, tried to do a mysql COMPRESS and UNCOMPRESS when uploading a new file....nothing. I'm just not sure why all of a sudden this stopped functioning properly (haven't done any upgrades to the server, db or code)

Anyone have any ideas I can try?

For reference, the code for inserting and downloading follows:
insert:

case "Add File":
$fp = fopen($_FILES['userfile']['tmp_name'], 'r');
$content = fread($fp, filesize($_FILES['userfile']['tmp_name']));
$content = base64_encode($content);
mysql_query("INSERT INTO intranet.documents(id, type, contents, content, name, category, updated) VALUES ('', '".$_FILES['userfile']['type']."', '".$content."', COMPRESS('".$content."'), '".addslashes(str_replace(" ", "_", strtolower($_FILES['userfile']['name'])))."','".$_POST['category']."', '".date("Y-m-d H:i:s")."')") or die(mysql_error());
fclose($fp);
redirect("?action=".$_GET['action']);
break;


download:

$_SESSION['content'] = NULL;
$result = mysql_query("SELECT name, type, contents FROM intranet.documents WHERE ID = '".$_GET['id']."'") or die(mysql_error());
$_SESSION['content'] = base64_decode(mysql_result($result, 0, "contents"));
header("Content-Disposition: attachment; filename=".mysql_result($result, 0, "name")."");
header("Content-type: ".mysql_result($result, 0, "type"));

Your Answer:

Login to answer

Other forums

pull content
I have an existing page, domain/adverts.php which has a good PR. I've just rebuilt my site and the n

Matchcode in ALV change header column
Hello everyone,

I am working in an SAP system that is currently in upgrade and conversion

Apart from cron
I need to run a php file every one hour. Is there any other solution apart from cron job?

MySql timezone
Code: $sql = "SELECT *, date_format(date, '%m/%d/%Y at %I:%i %p' )as date FROM comments WHERE t

How to ... (FAQs)
... get e-mail notifications As several people asked how to get e-mail notifications when new posti

add to sql result
ok see rite now my sites hit counter is counted from the mysql visitor log i need to clear it aft

Displaying Column Names
I have a question regarding the ability to show the column names from my table/query.
What I'm lo

post to self
Trying to get my form to submit to itself. However I am also trying to use an image for my submit bu

query help
Hi experts.

i have a table rep2 like this
PROD_COD ACCT_NO DUE_DAYS BALANCE

Ajax Error since Upgrading to 3.5
Ever since upgrading my site to .NET 3.5 (I needed LINQ), I've been getting this annoying error on o