Попробуйте следующее на основе " PHP usort сортировка нескольких полей " поток ответов:
add_filter( 'woocommerce_order_get_items', 'filter_order_get_items_callback', 10, 2 );
function filter_order_get_items_callback( $items, $order ) {
uasort( $items,
function( $a, $b ) {
if( $a['pa_location'] == $b['pa_location'] ) {
return strcmp( $a['_sku'], $b['_sku'] );
}
return strnatcmp( $a['pa_location'], $b['pa_location'] );
}
);
return $items;
}
ТЕСТИРОВАНИЕ:
$items = array (
0 => array ( 'pa_location' => 'Marseille',
'_sku' => '27458C' ),
1 => array ( 'pa_location' => 'Nice',
'_sku' => '32458A' ),
2 => array ('pa_location' => 'Cannes',
'_sku' => '35C7L5' ),
3 => array ('pa_location' => 'Marseille',
'_sku' => '387B85'),
4 => array ( 'pa_location' => 'Cannes',
'_sku' => '25A587' )
);
uasort( $items, function( $a, $b ) {
if( $a['pa_location'] == $b['pa_location'] ) {
return strcmp( $a['_sku'], $b['_sku'] );
}
return strnatcmp( $a['pa_location'], $b['pa_location'] );
} );
// Raw output
echo '<pre>'; print_r( $items ); echo '<pre>';
Мы получаем следующий вывод:
Array
(
[2] => Array
(
[pa_location] => Cannes
[_sku] => 25A587
)
[4] => Array
(
[pa_location] => Cannes
[_sku] => 35C7L5
)
[0] => Array
(
[pa_location] => Marseille
[_sku] => 27458C
)
[3] => Array
(
[pa_location] => Marseille
[_sku] => 387B85
)
[1] => Array
(
[pa_location] => Nice
[_sku] => 32458A
)
)
Что мы и ожидаем, сортируя сначала pa_location
и после _sku
.