Can you please explain in simple English what this php line means?

Question

What does the below php line of code mean please?

I am trying to understand how the below code impacts the behaviour of the template-parts/post/content.php file in wordpress.

<?php if ( is_single() && ! empty( $category_array ) && !in_array(2, $category_array ) ) : ?>

score 3 · Answer 1 · answered Jan 03 '19 at 14:07

3

"If the page we're on is showing a single post, and the post has categories, and none of the categories are category #2..."

answered Jan 03 '19 at 14:07

ceejayoz

Well it could be any array of categories which is not empty and contains category #2 :p – Alon Eitan Jan 03 '19 at 14:12
Thanks, that's what I needed. If I wanted to add more categories to category 2, should I just add them with a comma? ex. array(2,5 – Matthew Jan 03 '19 at 14:13
Sorry, revising my answer to your comment; No, looks like you'd need separate `in_array` statements in sequence. – ceejayoz Jan 03 '19 at 14:17
so for example - adding && !in_array(3, $category_array ) ? – Matthew Jan 03 '19 at 14:19
@Matthew Yes, that should do it. – ceejayoz Jan 03 '19 at 14:21
If you need many categories to be excluded - you could write an intersect like this : https://stackoverflow.com/a/11040612/4244684 – Stender Jan 03 '19 at 14:43

1 Answers1