Re: [PHP-DB] Retrieving Image Location in MySQL

[email protected] (Sashikanth Gurram) Sat, 07 Mar 2009 05:36:43 -0500
Newsgroups	php.db
Message-ID	<[email protected]>
Hi JP,
Thanks for chipping in again. I have been using the following code 
(after retrieving the local location of my image to the variable 
$location. I am not really looking to host the pictures onto a site as 
of now), which u have earlier provided me with
/
$err=1;
if ($img = file_get_contents("$location", FILE_BINARY))
{
  if ($img = imagecreatefromstring($img)) $err = 0;
}
if ($err)
{
  header('Content-Type: text/html');
  echo '<html><body><p style="font-size:9px">Error getting 
image...</p></body></html>';
}
else
{
  header('Content-Type: image/jpeg');
  imagejpeg($img);
  imagedestroy($img);
}
/
I am just using this and nothing more, and I have been getting a warning 
of sort "CANNOT MODIFY HEADER INFORMATION-HEADERS ALREADY SENT ......ON 
LINE 234". I have looked about this warning online and i found that this 
occurs when the output is sent to the browser before the headers. From 
the look of the above code, I dont think I am sending the info to the 
browser before the headers. Also, when I use the above code, I see a lot 
of ASCII characters in my browser. May be, the image is encrypted into 
some form and the encrypted form is being displayed instead of the 
picture. Further, you have always mentioned about using

img src="picture.php?&img=1234. I did not clearly understand where to put it in the code. Is it a part of HTML code or is it a part of PHP code?


Thanks,
Sashi



Joao Gomes Madeira wrote:
> Hello again Sashi
>
> The answer provided by Mushin won't work because images are not
> acessible from the outside. You can't have
>
> <img src="C:\Users\Sashikanth\Desktop\Bldgs_lots\Burruss.jpg" ...>
>
> because that's not a valid URL...
>
> You can have something like
>
> <img src="Bldgs_lots/Burruss.jpg" ...>
>
> which when interpreted by the browser will become something like
>
> http://yoursite/Bldgs_lots/Burruss.jpg
>
> Now, for this to happen you need to have Bldgs_lots as a subfolder or
> alias for your site.
>
> Otherwise, there is the way I mentioned in the first place, involving a
> php script just to get the image, which has to be called from within
> your script, passing it the info from the database
>
> echo '<img src="picture.php?&img=' . $location . '" border="1" height="150" width="200" 
> alt="' . $build . '">';
>
> Now, I don't recommend passing local paths like this to scripts ...
>
> Hope this helps
> C ya
> JP
>
>
>   


-- 
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Sashikanth Gurram
Graduate Research Assistant
Department of Civil and Environmental Engineering
Virginia Tech
Blacksburg, VA 24060, USA