gnome-web-photo & php

icsbcn

Hello,

I have implemented this script:

<?php
shell_exec('gnome-web-photo -t 0 --mode=thumbnail -w 512 -s 256 http://www.google.com /tmp/google.jpg');
?>

If I execute it in the shell it runs perfectly, but if I execute it in a browser I view this error: Cannot open display:

Somebody can help me please?

Thank you so much.

gomer

Sounds like the application is trying to open the X display. Are you trying to get the image to display for someone logged into the server's console or for someone logged into a web site?

gomer

It looks like the app won't actually print to the screen the way you've invoked it, so maybe you can get away by setting the DISPLAY environment variable first:

<?php
shell_exec('DISPLAY=0:0 gnome-web-photo -t 0 --mode=thumbnail -w 512 -s 256 http://www.google.com /tmp/google.jpg');
?>

icsbcn

Thank you for your quickly response.

I have tried your option but the result is the same error.

Best regards.

gomer

I did a stack trace on gnome-web-photo.

open("/dev/tty", O_RDWR|O_NONBLOCK|O_LARGEFILE) = 3
close(3) = 0

I'm not sure why, but it really wants to open the terminal.

If your goal is just to generate a thumbnail, have you considered using imagemagick's convert?

icsbcn

Thanks,

Do you know some method to make a thumbnail with php and imagemagick?

gomer

The API is here:
http://php.net/manual/en/book.imagick.php
Simply, Imagick::thumbnailImage should do the trick.

If you wanted to still use imagemagick on the command line, then something akin to:
convert -thumbnail 100x100x0x0 original.jpg new.jpg

or convert -resize works, too.