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PHP?? ?? ??? ?? ???? ????? ????? ??? ?? ????

Dec 20, 2024 pm 04:20 PM

How Can I Reliably Validate Date Strings with Specific Formats in PHP?

PHP?? ?? ??? ???? ?? ??? ??? ??

?? ???? ???? ?? ???? ??? ???? ?? ?? ??? ?? ??? ??? ???? ?? ????. ??? ?? ??? ???? ?? ? ????? PHP? DateTime ???? ???? ??? ??? ?????.

DateTime::createFromFormat() ??

PHP? DateTime::createFromFormat() ??? ??? ?????. ?? ??? ?? ??? ??? ??? ?? ???? ??????. ?? ???? ??? ??? ? ??? ???? ??? ???? DateTime ??? ?? ? ????.

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 $d && strtolower($d->format($format)) === strtolower($date);
}

?? ?? ??

validateDate() ?? ???? ???? ?? ?? ??? ?????.

  • ?? ???? DateTime?? ????? ???. object.
  • DateTime ??? ???? ??? ??? ???? ???? ???? ???.

??? ?? ? ??

?? ??? ??? verifyDate() ??? ???? ?????.

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'));  // false
var_dump(validateDate('2013 DEC 1', 'Y M j'));  // true

?? ??? ?? ??? ??? ?????.

????? DateTime::createFromFormat()? PHP?? ?? ???? ???? ??? ??? ???? ??? ???? ???? ?????.

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