Code for homepage, displays 6 random members

home_functions.php

<?php

/*
 * Function Name: buat_shortcode_grabber()
 * Description: This function reads shortcodes from page and call template function according to user type
 */

function buat_shortcode_grabber( $atts ) {
    
        $buat_default_type=get_option('buat_default_type');
	extract( shortcode_atts( array(
		'type' => "$buat_default_type",
		
	), $atts ) );
        if(!is_plugin_active('buddypress/bp-loader.php'))
            {
            echo 'You must need to install and active <a href="http://buddypress.org">Buddypress</a> 
                to use Buddypress User Account Type plugin';
            }
            else   
            {
            buat_get_user_template($type);
            }


	if(is_front_page())
            {
	    $dm_number = 6;
            }
            else   
            {
            $dm_number = 20;
            }
            echo "$dm_number";

}
add_shortcode( 'bp_user_account_type', 'buat_shortcode_grabber' );


function buat_get_user_template($type)
{
    $filtered_users=buat_gather_user_ids($type);

    $the_members_you_want = "include=" . $filtered_users . "&max=" . $dm_number . "&type=random";
    if ( bp_has_members( $the_members_you_want ) ) : ?>
    
  
<div style="margin-top: 20px; margin-bottom: 20px;"> 
    <div class="pagination">
 
        <div class="pag-count" id="member-dir-count">
            <?php bp_members_pagination_count() ?>
        </div>
 
        <div class="pagination-links" id="member-dir-pag">
            <?php bp_members_pagination_links() ?>
        </div>
 
    </div>
 
    <?php do_action( 'bp_before_directory_members_list' ) ?>
 
    <ul id="members-list" class="item-list" style="list-style-type:none; margin: 0; width: auto">
    <?php while ( bp_members() ) : bp_the_member(); ?>
 
        <li>
            <div class="item-avatar">
                <a href="<?php bp_member_permalink() ?>"><?php bp_member_avatar() ?></a>
            </div>
 
            <div class="item">
                <div class="item-title">
                    <a href="<?php bp_member_permalink() ?>"><?php bp_member_name() ?></a>
                    <?php if ( bp_get_member_latest_update() ) : ?>
                        <span class="update"> - <?php bp_member_latest_update( 'length=10' ) ?></span>
                    <?php endif; ?>
                </div>
              
 
                <?php do_action( 'bp_directory_members_item' ) ?>
 
                <?php
                 /***
                  * If you want to show specific profile fields here you can,
                  * but it'll add an extra query for each member in the loop
                  * (only one regadless of the number of fields you show):
                  *
                  * bp_member_profile_data( 'field=the field name' );
                  */
                ?>
            </div>
 
            <div class="action">
                <?php do_action( 'bp_directory_members_actions' ) ?>
            </div>
 
            <div class="clear"></div>
        </li>
 
    <?php endwhile; ?>
    </ul>
 
    <?php do_action( 'bp_after_directory_members_list' ) ?>
 
    <?php bp_member_hidden_fields() ?>
 
<?php else: ?>
 
    <div id="message" class="info">
        <p><?php _e( "Sorry, no members were found.", 'buddypress' ) ?></p>
    </div>
 
<?php endif; ?> 
</div>
<?php    
}



function buat_get_user_id_by_type($type)
{
    global $wpdb;
    $fid=get_option('buat_type_field');
    
    $query= "SELECT user_id FROM ".$wpdb->base_prefix."bp_xprofile_data WHERE field_id='$fid' AND value='$type'";
    $xpro_data=$wpdb->get_results($query,ARRAY_A);
    foreach($xpro_data as $ids)
    {
        $u_ids[$i++] = $ids['user_id'];
    }
    return $u_ids;
}

function buat_gather_user_ids($type)
{
    
    $ids = buat_get_user_id_by_type($type);
    return implode(',', (array) $ids);
    
    
    
}



function buat_update_role_at_registration($user_id, $user_login, $user_password, $user_email, $usermeta) {
    $type_filed_id = get_option('buat_type_field');
    $current_role_setting = get_option('buat_user_roles');
 
        $type_value = $usermeta["field_$type_filed_id"];
        $type_id = xprofile_get_field_id_from_name($type_value);

    
    $role = $current_role_setting[$type_id];
    buat_update_user_role($user_id,$role);
}
add_action('bp_core_signup_user','buat_update_role_at_registration',10,5);

function buat_rimon_habib_donate()
{
    
    ?>



<div class="update-nag" style="margin-top: 10px">
    
<form id="rimon_habib_donate" action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="_s-xclick">
<input type="hidden" name="hosted_button_id" value="2TXZUHA8DEEWC">

<input type="hidden" name="on0" value="Donation">
<p style="margin-top: 10px; font-size: 14px; color: green;" >You are using Buddypress User Account Type Plugin
    Make a donation to support us if you liked this.</p>
<div style="margin-top: 10px">
<select name="os0" style="margin-left:0px">
	<option value="Donate5">Donate $5.00 USD</option>
	<option selected="selected" value="Donate10">Donate $10.00 USD</option>
	<option value="Donate15">Donate $15.00 USD</option>
        <option value="Donate20">Donate $20.00 USD</option>
</select> 
    <br>
<input type="hidden" name="currency_code" value="USD">
<input type="image" style="margin-top:5px; margin-left: 0px" src="http://rimonhabib.com/wp-content/uploads/2012/04/donate.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online!"
       onclick="getElementById('rimon_habib_donate').submit()">
      
<img  alt="" border="0" src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" width="1" height="1">
</form>
</div>
    </div>
        
    <?php
}


?>