Determining Image Size

[Anon]

Is there any way to determine the height and width in pixels of a jpg file in php?
I have an archive of images of various sizes and when a thumbnail is clicked i want a new window to appear the same size as the image.

Is this possible????
thanks

foo

[mithril]

Assuming you have GD enabled, you can do something like this:

 <?php

   $im = ImageCreateFromJPEG("/path/to/image.jpg");

   $width = ImageSX($im);
   $height = ImageSX($im);

   ImageDestroy($im);

 ?>

Alternatively, if you have compiled using --enable-exif (this is default in the Win32 binaries) you can do:

 <?php

   $im = read_exif_data("/path/to/image.jpg");

   echo "Width: " . $im["Width"] . "<br>\n";
   echo "Height: " . $im["Height"] . "<br>\n";

 ?>

HTH.

geoff

[Anon]

I would say that the function getImageSize(filename) is somewhat easier than using GD-stuff...
Check the manual for details.

Martin

[mithril]

Yup, GetImageSize() is easier than the GD method I mentioned..... forgot about that one🙂 However, that function is still a GD function and requires the GD module to be enabled. read_exif_data() works regardless of whether GD is enabled or not, it just spits out more info if GD is available. HTH.

geoff