Usando WP_Query per interrogare più categorie con post limitati per categoria?

WP_Query()non supporta qualcosa come First X For Each Cat .Invece di WP_Query()puoi usare get_posts() su ciascuna delletue categorie,per così diretre volte:

 <?php
$posts      = array():
$categories = array(2,4,8);
foreach($categories as $cat) {
  $posts[] = get_posts('numberposts=5&offset=1&category='.$cat);
}
?>
 

$posts ora contienei primi cinquepostper ogni categoria.

WP_Query() does not support something like First X For Each Cat. Instead of WP_Query() you can use get_posts() on each of your categories, so to say three times:

<?php
$posts      = array():
$categories = array(2,4,8);
foreach($categories as $cat) {
  $posts[] = get_posts('numberposts=5&offset=1&category='.$cat);
}
?>

$posts now contains the first five posts for each category.

Non conosco unmodoper ottenerei primi cinquepostper ciascuna delle categoriein una singola query.Se hai solo 45post,quindipremere una voltail databasee ottenerei tuoi cinquepostper ciascuna categoria èprobabilmente l'approcciopiùefficiente.Colpireil databasetre voltee combinarei risultatinon è unabrutta cosa.

I don't know of a way to get the first five posts for each of the categories in a single query. If you're ever going to only have 45 posts, then hitting the database once and getting your five posts for each category is probably the most efficient approach. Hitting the database three times and combining the results isn't a bad thing though.