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1. strider72
   Member
   Posted 3 years ago #

   For this example: let's say I'm on Post with ID 4. In the loop, I have the following line:

   echo get_post_meta(the_ID(), 'thisPageIndex', true);

   This should echo the content of tag 'thisPageIndex' for the post with ID 4. Instead it echoes:

   4

   If I hard-code the post number in, like this:

   echo get_post_meta('4', 'thisPageIndex', true);

   It properly echoes the value of the 'thisPageIndex' tag.

   I can hard code it as number or string and it works fine. I tried wrapping the_ID in an strval() -- no dice. Any time I try to call the post's ID with the_ID, the whole line is overwritten with just the ID number. I can't figure out what could possible be causing this! HELP!

2. Kafkaesqui
   Moderator
   Posted 3 years ago #

   This is actually expected behavior for the_ID(). It's goal is to echo the ID of the post, and it appears to be doing that quite well. So to return or pass the post ID to the get_post_meta() function, use this instead:

   $post->ID

   You can also try $id which is a global var in WordPress and typically available within The Loop.

3. strider72
   Member
   Posted 3 years ago #

   Thanks for the assist. Either of those seems to work.

   The behavior of the_ID() does seem to fly in the face of logic though -- if the function returns the post ID, then why would it overwrite an entire other function containing it?

   Whatever -- It's working now. Thanks a bunch!

4. Kafkaesqui
   Moderator
   Posted 3 years ago #

   the_ID() does not return the value, it just echoes or prints it. With PHP there's a difference between the two.

5. mahalie
   Member
   Posted 2 years ago #

   I was trying to assign the_ID() to a var to use in a custom query and it was driving me nuts since echoing was working fine. I don't really understand it but $id worked.

   However, if someone wants to explain that, more specifically, how could/would you store the results from the_ID() in a variable so you could use it as an int?

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