reduce_double_slashes($str)

get_month_name($month)

get_filenames($source_dir[, $include_path = FALSE])

is_https()

form_open([$action = ''[, $attributes = ''[, $hidden = array()]]])

get_instance()

result_array()

set_checkbox($field[, $value = ''[, $default = FALSE]])

form_radio([$data = ''[, $value = ''[, $checked = FALSE[, $extra = '']]]])

free_result()