Limit the BuddyPress datebox year range.

gistfile1.aw

<?php

if ( ! function_exists( 'ucc_profile_field_datebox_year_range' ) ) {
function ucc_profile_field_datebox_year_range( $html, $type, $day, $month, $year, $field_id, $date ) {
	if ( 'year' == $type ) {
		$current_year = date( 'Y' );
		$past_year = $current_year - 3;
		$future_year = $current_year + 3;
		$html = '';
		$html .= '<option value=""' . selected( $year, '', false ) . '>----</option>';
		for ( $i = $future_year; $i >= $past_year; $i-- ) {
			$html .= '<option value="' . $i .'"' . selected( $year, $i, false ) . '>' . $i . '</option>';
		}
	}
	return $html;
} }
add_filter( 'bp_get_the_profile_field_datebox', 'ucc_profile_field_datebox_year_range', 10, 7 );

/*
	Copyright 2012 Jennifer M. Dodd (email: jmdodd@gmail.com)
	Released under the GPLv2 (or later).
*/

?>