function date_range_valid

1 date.inc date_range_valid($string)

Tests validity of a date range string.

Parameters

string $string: A min and max year string like '-3:+1'a.

Return value

bool: TRUE if the date range is valid, FALSE otherwise.

2 calls to date_range_valid()

DateAPITestCase::testDateAPI in core/modules/date/tests/date_api.test
date_year_range_validate in core/modules/date/date.elements.inc: Element validation function for the date_year_range form element.

File

core/includes/date.inc, line 1427: Date API functions.

Code

function date_range_valid($string) {
  $matches = preg_match('@^([\+\-][0-9]+|[0-9]{4}):([\+\-][0-9]+|[0-9]{4})$@', $string);
  return $matches < 1 ? FALSE : TRUE;
}