Image Size

Cogen2

Does anyone know how I can get the width and height of an image when taking it out of the database? I want the image constrained to a certain size (with it's proportions the same as the original) when being displayed. For instance, if the image in the database is 1000x500, I want to scale it down to 500x250. I'm useing this code to get it out of the database ..

$type = $row["loc_imagetype"];
$image = $row["loc_image"];

header("Content-type: ".$type);
echo $image;

The above works, but how do I find out the size? I think to use getimagesize, you need an actual link to an image, not the actual image code(which is what the "image" variable holds.

ps .. I prefer not to create a temp file.

brad_fears

I'm not sure there is a way to do that, since you've already stored the image in the database, and you're just referencing the name and location of the image, but not working with the image itself.

Perhaps the easier solution (in the end) would be to store the dimensions of the image in the database when you insert the image itself.

--Brad Fears

Cogen2

Just to clairify, I'm storing the actual image in the database, not just the name and location. The "type" variable holds the type of the image (gif, jpg, etc). The "image" variable hold the mime code for the image.

Thanks for the advice Brad .. I'll wait to see if there's going to be any other replys, but if not I will store the dimesions in the database as you've suggested.

paul088

I believe there are php functions to get image info. Go to php.net and search for image or getimage or something like that.

paul088

I just checked a php book I have and found there is a function for it:

getimagesize($filename, $image_info_array)

Cogen2

Thanks Paul, however I can't get that function to work properly for me. Have you (or anyone reading this) ever stored images in a database? As I mentioned above in the original post, the getimagesize function needs a path/filename passed to it. I don't have an actual image file, just the mime code for the image.

paul088

Sorry I didn't read your original post carefully where you said you already knew about getimagesize. The php manual talked about getimagesize and another function image_type_to_mime_type. But I don't think I could understand it well. You may want to take a look at it.