groups query for loop using group meta

group_ids_by_meta_value.php

<?php
    function get_group_ids_by_type($type){
        $group_ids = array();
        $meta_query = array(
            array(
                'key'     => 'group_type',
                'value'   => $type,
                'compare' => '='
            )
        );
        $groups_args = array(
            'object' => 'groups',
            'meta_query' => $meta_query,
            'per_page' => 0,
        );
        if ( bp_has_groups( $groups_args ) ) :
            while ( bp_groups() ) : bp_the_group();
                $group_ids[] = bp_get_group_id();
            endwhile;
        endif;
        return $group_ids;
    }
?>