如果有帮助，请尝试以下代码：

function filtered_profile_data( $args ) {

$data = bp_get_member_profile_data( $args );

$defaults = array(
    \'field\' => false, // Field name
    \'user_id\' => $user_id
);

$r = wp_parse_args( $args, $defaults );
extract( $r, EXTR_SKIP );

switch($field) {
    case \'Field Name\': // for specific field character limit
    $max_len = 10;
    break;
    default:
    $max_len = 5;
    break;
}

echo substr( $data, 0, $max_len);

}