You will find the solution to the problem statement: take a string such as 2013-13-01 and tell if it is a valid date or not for the format yyyy-mm-dd?
Solution 1
You can use DateTime::createFromFormat() for this purpose:
function validateDate($date, $format = 'Y-m-d')
{
$d = DateTime::createFromFormat($format, $date);
// The Y ( 4 digits year ) returns TRUE for any integer with any number of digits so changing the comparison from == to === fixes the issue.
return $d && $d->format($format) === $date;
}var_dump(validateDate('2013-13-01')); // false
var_dump(validateDate('20132-13-01')); // false
var_dump(validateDate('2013-11-32')); // false
var_dump(validateDate('2012-2-25')); // false
var_dump(validateDate('2013-12-01')); // true
var_dump(validateDate('1970-12-01')); // true
var_dump(validateDate('2012-02-29')); // true
var_dump(validateDate('2012', 'Y')); // true
var_dump(validateDate('12012', 'Y')); // falsesolution 2
Use in a simple way with PHP prebuilt function:
function checkmydate($date) {
$tempDate = explode('-', $date);
// checkdate(month, day, year)
return checkdate($tempDate[1], $tempDate[2], $tempDate[0]);
}
