How to list post as buch of category, and all of them

Question

I like my homepage not to list only one category, but to list all category, group by post. Here is the request :

Cat

• 1
• 2
• 3
• 4
• 5

and the post will be :

post

• 1 (cat=2)
• 2(cat=2)
• 3(cat=1)
• 4(cat=3)
• 5(cat=4)
• 6(cat=4)
• 7(cat=4)
• 8(cat=4)
• 9(cat=5)

i like to list cat : 5,2,4,3,1 and when listing them, all the post from cat 5, then all the post from cat 2, and so on

So the result will be post :

• 9
• 1
• 2
• 5
• 6
• 7
• 8
• 4
• 3

hope the example is clear enough to let you help me... thanks in advance

Answer 1

here is a general structure how I would do it:

$categories = array(5,2,4,3,1); //manually enter the array of the category ids in the order how you want them to appear
  foreach( $categories as $cat ) { 
    $args = array( 
      'category__in' => array( $cat ), 
      'posts_per_page' => -1
      );
    $cat_query = new WP_Query( $args );
    if( $cat_query->have_posts() ) : while( $cat_query->have_posts() ) : $cat_query->the_post();
//enter here, whatever you want to show per post//
    endwhile;
    endif;
  } //end of foreach