dynamic image - save-as filename

unstable_geek

I have a website that uses PHP for dynamic thumbnails.

Everything works great.

I get my images with this URL:
<img src="/resize_picture.php?name=foo.jpg&h=100&w=100">

my problem is, the browser will show the filename as "resize_picture.php?name=foo.jpg&h=100&w=100" instead of "foo.jpg".

Is there anyway I can change this behaivour?

LordShryku

Where do you want to change this? You can change the name showing in the status bar with a little onMouseOver javascript to the link. But if you want to change the the actual properties of the link, you may be out of luck.

unstable_geek

I want the user to be able to use the normal browser menus to save the image, but it to be named correctly.

I have been thinking about server URL rewrites, but was hoping against hope I could set a html attribute in the <img> tag or something.

I dont think so though hey......

I think rewrites are the way to go....

dniry

I'm not sure what your code looks like, but why not have the function that does your re-sizing write the thumbnail to disk, and then just make it return the value of the thumbnail file name created ? You could even base it on the original file, eg: foo.jpg -> foo_th.jpg

function resizeImage($image_file) {

// all your code that does the actual re-sizing,
// creates the new file name and writes the file to disk

return ThumbFileName;

}

You can then use something like this:

$img_name=resizeImage("foo.jpg",100,100);
echo "<img src=\"thumbs_dir/$img_name\">

depending on your needs, you can just set up a cron job to clean up the directory where you save your thumbnails.

unstable_geek

yep - that would work fine.
except I have designed things a little differently.
my resize php is a stand alone file deisgned to be in the src="" of an <img> tag.

anyway - I think I'll have to change that 🙂

thanks for the suggestions....

dniry

I see, you stream the image's binary cod right into that file. Out of sheer curiosity, how do you do that ?

unstable_geek

first - determine file type

if( eregi( "(.*)\.jpg", $file, $matches) ) {
	$image = @imagecreatefromjpeg($file);
 }
if( eregi( "(.*)\.bmp", $file, $matches) ) {
	$image = @imagecreatefromwbmp($file);
}
if( eregi( "(.*)\.gif", $file, $matches) ) {
	$image = @imagecreatefromgif($file);
}

then set the size of the image

$orig_w=ImageSX($image);
$orig_h=ImageSY($image);

// chose the dimension to scale with
//
if( ($orig_h > $orig_w) && isset($h) )
{
	$factor = $orig_h / $h;
	$w = $orig_w / $factor;
}
else
{
	if(isset($w))
	{
		$factor = $orig_w / $w;
		$h = $orig_h / $factor;
	}
	else
	{
	// need to scale by height even
	// though we should scale by width
	// but no wanted width was supplied
	$factor = $orig_h / $h;
	$w = $orig_w / $factor;
	}
}

then copy the image in:

       $thumb=ImageCreateTrueColor($w,$h);

ImageCopyResampled($thumb,$image,
				     0,0,0,0,
				     $w,$h,
				     $orig_w,$orig_h);

header("Content-type: image/jpeg");
ImageJPEG($thumb, $thumbname, 100);
readfile($thumbname);

I save the file with the ImageJPEG() function and have this whole thing wrapped to check for the existance of the previously generated file. A cache if you will 🙂 Do you ever find yourself explaining the most basic things to people becasue you're so used to explaining every last thing you do 🙂 I do .... 😕

anyway

so sorry you had to sit through one of my drivel sessions.

dniry

thanks for the info unstable_geek.... I'm new to PHP... picked it up about a month ago, so this is brand new to me.

I'm afraid there' not much that I could help you with in PHP since I'm just getting started, but if you ever need help with database design or SQL, don't hesitate...

-David