bp_ps_search( $request,  $users = null )

function bp_ps_search ( $request, $users = null ) {
    $results = array ( 'users' => array ( 0 ), 'validated' => true );

    $fields = bp_ps_parse_request( $request );

    $copied_arr = array();

    foreach ( $fields as $f ) {
        if ( !isset( $f->filter ) )
            continue;
        if ( !is_callable( $f->search ) )
            continue;

        $f = apply_filters( 'bp_ps_field_before_query', $f );

        $found = call_user_func( $f->search, $f );
        $found = apply_filters( 'bp_ps_field_search_results', $found, $f );

	    $copied_arr = $found;
	    if ( isset( $copied_arr ) && !empty( $copied_arr ) ) {
		    foreach ( $copied_arr as $key => $user ) {
			    $field_visibility = xprofile_get_field_visibility_level( intval( $f->id ), intval( $user ) );
			    if ( 'adminsonly' === $field_visibility && ! current_user_can( 'administrator' ) ) {
				    if ( ( $key = array_search( $user, $found ) ) !== false ) {
					    unset( $found[ $key ] );
				    }
			    }
			    if ( 'friends' === $field_visibility && ! current_user_can( 'administrator' ) && false === friends_check_friendship( intval( $user ), bp_loggedin_user_id() ) ) {
				    if ( ( $key = array_search( $user, $found ) ) !== false ) {
					    unset( $found[ $key ] );
				    }
			    }
		    }
	    }

        $match_all = apply_filters( 'bp_ps_match_all', true );
        if ( $match_all ) {
            $users = isset( $users ) ? array_intersect( $users, $found ) : $found;
            if ( count( $users ) == 0 )
                return $results;
        }
        else {
            $users = isset( $users ) ? array_merge( $users, $found ) : $found;
        }
    }

    if ( isset( $users ) )
        $results[ 'users' ] = $users;
    else
        $results[ 'validated' ] = false;

    return $results;
}