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6 thoughts on “Howto detect if typed date is valid”

  1. Giacomo

    Riddle: catch the bug.

    isValidDate('30/08/2012', '/', 'dmy') == true
isValidDate('29/02/2000', '/', 'dmy') == true
isValidDate('10/10/1580', '/', 'dmy') == true
isValidDate('29/02/2001', '/', 'dmy') == false
isValidDate('10/10/1582', '/', 'dmy') == true
isValidDate('10/12/2121', '/', 'dmy') == true
isValidDate('10/10/2000', '/', 'dmy') == true

    where is the function lack?

    • Diego La Monica

      Hi Giacomo,
      trying the following code:

      Hi Giacomo,
      trying the following code:

      var_dump(validaData('30/08/2012', '/', 'dmy')); # bool(true)
var_dump(validaData('29/02/2000', '/', 'dmy')); # bool(true)
var_dump(validaData('10/10/1580', '/', 'dmy')); # bool(true)
var_dump(validaData('29/02/2001', '/', 'dmy')); # bool(false)
var_dump(validaData('10/10/1582', '/', 'dmy')); # bool(true)
var_dump(validaData('10/12/2121', '/', 'dmy')); # bool(true)
var_dump(validaData('10/10/2000', '/', 'dmy')); # bool(true)

      the output is as expected. So… where is the bug? :)

  3. Giacomo

    no, it wasn’t!
    the day after 4th october, was 15th october, according to Gregorian calendar.

    ….but ….

    …but…. there are many consideration we could do. (i.e. Swedish Reign used Giulian (Assange) calendar till 1699)