通过Apache处理Raspberry Pi相机

Question

I'm trying to get an image of the raspi camera via a php script. It's installed php5, apache2 and all necessary stuff.

Snippet: /var/www/img.php

if(isset($_GET['pic']))
    system("sudo raspistill -w 512 -h 320 -o /var/www/img/img.jpg");

When I run the command directly in the terminal it's working, but the php script not. With sudo php /var/www/img.php?pic I'll get an error:

Could not read input file: /var/www/img.php

First I thought it's a problem with the permissions, but isn't working even with root privileges.

Have anybody an idea? I'm really depressed..

Thanks a lot!

Answer 1

Solution

first it's necessary to change the owner of the apache directory:

sudo chown www-data:www-data -R /var/www

After that it's not necessary to prepend sudo:

exec('raspistill ...');

It's also possible with popen, system, ...