How can one determine, from functions.php, the blog-id of the site (or alternately, the path to the media directory)?


For the current site, you can use the $current_site global variable and look at the blog_id member variable, e.g. $current_site->blog_id

  • Thanks mtekk, I've updated my question with your answer and my script.
    – Scott B
    Nov 18 '10 at 17:59
  • I can't get $current_site->blog_id to echo anything
    – Scott B
    Nov 19 '10 at 12:25
  • 1
    Inside a function you'll need to globalise the var else it's outside the scope of the function.. ie. global $current_site;
    – t31os
    Nov 19 '10 at 12:41
  • You'll need to globalise it, as t31os said, even if you are calling it just in the functions.php file.
    – mtekk
    Nov 19 '10 at 16:57
  • 2
    FYI $GLOBALS['current_site']->blog_id will work without using the globals keyword first. It also has the advantage of being clearly global everywhere you use it.
    – Steve Clay
    Dec 8 '10 at 23:25

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