image dimensions ?

[Yang Li Ke]

Hi guys!

If someone post a link to an image like this:

http://ia.imdb.com/media/imdb/01/I/57/18/16m.jpg

Is there any ways to find the images width and height?

Thank you!
--
Yang

[jn]

Re: image dimensions ?

I didn't write the function below. It's from the comments section of
getimagesize() on php.net:

function getimagesize_re mote($image_url ) {
$handle = fopen ($image_url, "rb");
$contents = "";
if ($handle) {
do {
$count += 1;
$data = fread($handle, 8192);
if (strlen($data) == 0) {
break;
}
$contents .= $data;
} while(true);
} else { return false; }
fclose ($handle);

$im = ImageCreateFrom String($content s);
if (!$im) { return false; }
$gis[0] = ImageSX($im);
$gis[1] = ImageSY($im);
// array member 3 is used below to keep with current getimagesize standards
$gis[3] = "width={$gi s[0]} height={$gis[1]}";
ImageDestroy($i m);
return $gis;
}


"Yang Li Ke" <yanglike@sympa tico.ca> wrote in message
news:l6TSb.6891 9$Kg6.916289@ne ws20.bellglobal .com...[color=blue]
> Hi guys!
>
> If someone post a link to an image like this:
> http://ia.imdb.com/media/imdb/01/I/57/18/16m.jpg
>
> Is there any ways to find the images width and height?
>
> Thank you!
> --
> Yang
>
>
>[/color]

[Yang Li Ke]

Re: image dimensions ?

thank you!


--


"jn" <usenet*spamist ehsuckremovetor eply*@jasonnorr is.net> wrote in message
news:LrUSb.1250 27$873.2605111@ twister.tampaba y.rr.com...[color=blue]
> I didn't write the function below. It's from the comments section of
> getimagesize() on php.net:
>
> function getimagesize_re mote($image_url ) {
> $handle = fopen ($image_url, "rb");
> $contents = "";
> if ($handle) {
> do {
> $count += 1;
> $data = fread($handle, 8192);
> if (strlen($data) == 0) {
> break;
> }
> $contents .= $data;
> } while(true);
> } else { return false; }
> fclose ($handle);
>
> $im = ImageCreateFrom String($content s);
> if (!$im) { return false; }
> $gis[0] = ImageSX($im);
> $gis[1] = ImageSY($im);
> // array member 3 is used below to keep with current getimagesize[/color]
standards[color=blue]
> $gis[3] = "width={$gi s[0]} height={$gis[1]}";
> ImageDestroy($i m);
> return $gis;
> }
>
>
> "Yang Li Ke" <yanglike@sympa tico.ca> wrote in message
> news:l6TSb.6891 9$Kg6.916289@ne ws20.bellglobal .com...[color=green]
> > Hi guys!
> >
> > If someone post a link to an image like this:
> > http://ia.imdb.com/media/imdb/01/I/57/18/16m.jpg
> >
> > Is there any ways to find the images width and height?
> >
> > Thank you!
> > --
> > Yang
> >
> >
> >[/color]
>
>[/color]

[CountScubula]

Re: image dimensions ?

"Yang Li Ke" <yanglike@sympa tico.ca> wrote in message
news:l6TSb.6891 9$Kg6.916289@ne ws20.bellglobal .com...[color=blue]
> Hi guys!
>
> If someone post a link to an image like this:
> http://ia.imdb.com/media/imdb/01/I/57/18/16m.jpg
>
> Is there any ways to find the images width and height?
>
> Thank you!
> --
> Yang
>
>[/color]

$aryInfo = getimagesize("h ttp://ia.imdb.com/media/imdb/01/I/57/18/16m.jpg");

--
Mike Bradley
http://www.gzentools.com -- free online php tools

[Chung Leong]

Re: image dimensions ?

But getimagesize() works for URLs. So why use a custom function?

Opening an user specified image file using the GD functions is rather
dangerous. I could easily create a .GIF file that'd bring your server to its
knees.

Uzytkownik "jn" <usenet*spamist ehsuckremovetor eply*@jasonnorr is.net> napisal
w wiadomosci news:LrUSb.1250 27$873.2605111@ twister.tampaba y.rr.com...[color=blue]
> I didn't write the function below. It's from the comments section of
> getimagesize() on php.net:
>
> function getimagesize_re mote($image_url ) {
> $handle = fopen ($image_url, "rb");
> $contents = "";
> if ($handle) {
> do {
> $count += 1;
> $data = fread($handle, 8192);
> if (strlen($data) == 0) {
> break;
> }
> $contents .= $data;
> } while(true);
> } else { return false; }
> fclose ($handle);
>
> $im = ImageCreateFrom String($content s);
> if (!$im) { return false; }
> $gis[0] = ImageSX($im);
> $gis[1] = ImageSY($im);
> // array member 3 is used below to keep with current getimagesize[/color]
standards[color=blue]
> $gis[3] = "width={$gi s[0]} height={$gis[1]}";
> ImageDestroy($i m);
> return $gis;
> }
>
>
> "Yang Li Ke" <yanglike@sympa tico.ca> wrote in message
> news:l6TSb.6891 9$Kg6.916289@ne ws20.bellglobal .com...[color=green]
> > Hi guys!
> >
> > If someone post a link to an image like this:
> > http://ia.imdb.com/media/imdb/01/I/57/18/16m.jpg
> >
> > Is there any ways to find the images width and height?
> >
> > Thank you!
> > --
> > Yang
> >
> >
> >[/color]
>
>[/color]

[Tim Tyler]

Re: image dimensions ?

Chung Leong <chernyshevsky@ hotmail.com> wrote or quoted:
[color=blue]
> But getimagesize() works for URLs. So why use a custom function?[/color]

According to the author:

``Using remote files with getimagesize($U RL) never worked for me.
Except when I would grab files from the same server.''

- http://uk.php.net/getimagesize
--
__________
|im |yler http://timtyler.org/ tim@tt1lock.org Remove lock to reply.

[Chung Leong]

Re: image dimensions ?

He must be using an ancient version of PHP. In any event it's stupid to load
up the image just to get the dimensions.

Uzytkownik "jn" <usenet*spamist ehsuckremovetor eply*@jasonnorr is.net> napisal
w wiadomosci news:LrUSb.1250 27$873.2605111@ twister.tampaba y.rr.com...[color=blue]
> I didn't write the function below. It's from the comments section of
> getimagesize() on php.net:
>
> function getimagesize_re mote($image_url ) {
> $handle = fopen ($image_url, "rb");
> $contents = "";
> if ($handle) {
> do {
> $count += 1;
> $data = fread($handle, 8192);
> if (strlen($data) == 0) {
> break;
> }
> $contents .= $data;
> } while(true);
> } else { return false; }
> fclose ($handle);
>
> $im = ImageCreateFrom String($content s);
> if (!$im) { return false; }
> $gis[0] = ImageSX($im);
> $gis[1] = ImageSY($im);
> // array member 3 is used below to keep with current getimagesize[/color]
standards[color=blue]
> $gis[3] = "width={$gi s[0]} height={$gis[1]}";
> ImageDestroy($i m);
> return $gis;
> }
>
>
> "Yang Li Ke" <yanglike@sympa tico.ca> wrote in message
> news:l6TSb.6891 9$Kg6.916289@ne ws20.bellglobal .com...[color=green]
> > Hi guys!
> >
> > If someone post a link to an image like this:
> > http://ia.imdb.com/media/imdb/01/I/57/18/16m.jpg
> >
> > Is there any ways to find the images width and height?
> >
> > Thank you!
> > --
> > Yang
> >
> >
> >[/color]
>
>[/color]

[Shawn Wilson]

Re: image dimensions ?

Chung Leong wrote:[color=blue]
>
> He must be using an ancient version of PHP. In any event it's stupid to load
> up the image just to get the dimensions.
>
> Uzytkownik "jn" <usenet*spamist ehsuckremovetor eply*@jasonnorr is.net> napisal
> w wiadomosci news:LrUSb.1250 27$873.2605111@ twister.tampaba y.rr.com...[color=green]
> > I didn't write the function below. It's from the comments section of
> > getimagesize() on php.net:
> >
> > function getimagesize_re mote($image_url ) {
> > $handle = fopen ($image_url, "rb");
> > $contents = "";
> > if ($handle) {
> > do {
> > $count += 1;
> > $data = fread($handle, 8192);
> > if (strlen($data) == 0) {
> > break;
> > }
> > $contents .= $data;
> > } while(true);
> > } else { return false; }
> > fclose ($handle);
> >
> > $im = ImageCreateFrom String($content s);
> > if (!$im) { return false; }
> > $gis[0] = ImageSX($im);
> > $gis[1] = ImageSY($im);
> > // array member 3 is used below to keep with current getimagesize[/color]
> standards[color=green]
> > $gis[3] = "width={$gi s[0]} height={$gis[1]}";
> > ImageDestroy($i m);
> > return $gis;
> > }
> >
> >
> > "Yang Li Ke" <yanglike@sympa tico.ca> wrote in message
> > news:l6TSb.6891 9$Kg6.916289@ne ws20.bellglobal .com...[color=darkred]
> > > Hi guys!
> > >
> > > If someone post a link to an image like this:
> > > http://ia.imdb.com/media/imdb/01/I/57/18/16m.jpg
> > >
> > > Is there any ways to find the images width and height?
> > >[/color][/color][/color]

Also, a lot of sites have anti-hotlinking policies in place. So the image your
server would get might be a "don't steal my bandwidth" image which would be
different dimensions than the intended image. This would be most likely to
happen if you sent a referrer that didn't match the website. I don't know how
many sites do this if you don't send a referrer.

Shawn
--
Shawn Wilson
shawn@glassgian t.com

http://www.glassgiant.com