Meta
$meta_query = array( 'relation' => 'OR', array( 'key' => 'adopted_fostered_by', 'type' => 'NUMERIC', ), array( 'key' => 'adopted_fostered_by_1', 'type' => 'NUMERIC', ), );
$meta_query = array( 'relation' => 'OR', array( 'key' => 'adopted_fostered_by', 'type' => 'NUMERIC', ), array( 'key' => 'adopted_fostered_by_1', 'type' => 'NUMERIC', ), );