How to add four WP Queries without duplicate posts

So far I have come across tuts that tell you how to have two queries without duplicate posts. I want four.

just keep repeating the ‘do_not_duplicate’ array method in each loop:

https://codex.www.ads-software.com/The_Loop#Multiple_Loops_in_Action

mainly after this line: ‘Note for Multiple Posts in the First Category’

rough layout:

query for loop1
loop1:
$do_not_duplicate[] = $post->ID;
end loop1;

query for loop2 including 'post__not_in => $do_not_duplicate'
loop2:
$do_not_duplicate[] = $post->ID;
end loop2;

query for loop3 including 'post__not_in => $do_not_duplicate'
loop3:
$do_not_duplicate[] = $post->ID;
end loop3;

query for loop4 including 'post__not_in => $do_not_duplicate'
loop4:
end loop4;

Thanks for pointing me in the right direction.
I was using 'post__not_in' => array($post->ID,$exclude_ids),
argument instead of 'post__not_in' => $exclude_ids,
Now it’s working fine.

Hi there, alchymyth! I tried to use this function but it doesn’t work for me. I’m using the code provided by MichaelH on this thread (displaying 5 latest post title on the main content) and my goal is that if an article is posted in two categories (Books + Movies), then once it is displayed on the first one (Books), then on the second one (Movies), it won’t show; the next article from that category will be displayed instead.

I’m not good at PHP, nothing new here but I always search and try everything I can. Now I’m stuck…

Thanks for you help!

code by MichaelH extended with ‘do_not_duplicate’
https://pastebin.com/bC7MQwNa

(no guarantee, untested)

OMG it works!! Thank you so much alchymyth. You made my day! ??