Filters a list of objects, based on a set of key => value arguments.
Description
Retrieves the objects from the list that match the given arguments.
Key represents property name, and value represents property value.
If an object has more properties than those specified in arguments, that will not disqualify it. When using the ‘AND’ operator, any missing properties will disqualify it.
When using the $field argument, this function can also retrieve a particular field from all matching objects, whereas wp_list_filter() only does the filtering.
Parameters
$input_listarrayrequired- An array of objects to filter.
$argsarrayoptional- An array of key => value arguments to match against each object.
Default:
array() $operatorstringoptional- The logical operation to perform.
'AND'means all elements from the array must match.'OR'means only one element needs to match.'NOT'means no elements may match. Default'AND'.Default:
'and' $fieldbool|stringoptional- A field from the object to place instead of the entire object.
Default:
false
Source
function wp_filter_object_list( $input_list, $args = array(), $operator = 'and', $field = false ) {
if ( ! is_array( $input_list ) ) {
return array();
}
$util = new WP_List_Util( $input_list );
$util->filter( $args, $operator );
if ( $field ) {
$util->pluck( $field );
}
return $util->get_output();
}
Filtering out certain post types from the loop following a search
If multiple post types are returned in a search query you can filter out the posts that are of post type ‘page’ only.