TimeStamp Format Validation

[SchweppesAle]

hi, I'm trying to use the following function in order to validate input as it's entered into the database.  All input should follow  the date('Y-m-d') format. If the function returns false I just enter a default value.  Seems there's something  wrong with the following algorithm though.

 

/*make sure date is valid and follows Y-m-d format*/
   function dateValidation($date)
   {
       /*first array element must be between 1970 and 2038*/
       /*second element must be between 01 and 12*/
       /*third between 01 and 31*/
       $validity = TRUE;

       $date = explode('-', $date);
       if($date[0] > 2038 || $date[0] < 1970)
       {
            $validity = FALSE;
       }
       
       if($date[1] > 12 || $date[1] < 01)
       {
            $validity = FALSE;
       }
       
       if($date[2] > 31 || $date[2] < 01)
       {
            $validity = FALSE;
       }

       /*must be equal to 3*/
       $size = count($date);
       if($size != 3)
       {
            $validity = FALSE;
       }

            return $validity;
   }

[SchweppesAle]

tried a new approach, still no luck though. 

 

   /*make sure date is valid and follows Y-m-d format*/
   function dateValidation($date)
   {

       $validity = TRUE;

       $date = explode('-', $date);

       /*must be equal to 3*/
       $size = count($date);
       if($size != 3)
       {
            $validity = FALSE;
       }

       if(!checkdate($date[1], $date[2], $date[0]))
       {
            $validity = FALSE;
       }

            return $validity;
   }

[rajivgonsalves]

  function dateValidation($date)
   {
        @list ($year, $month, $day) = explode('-', $date);
        return (strlen($year) === 4 && strlen($month) === 2 && strlen($day) === 2) ? checkdate($month,$year,$day) : false;
   }

[SchweppesAle]

  function dateValidation($date)
   {
        @list ($year, $month, $day) = explode('-', $date);
        return (strlen($year) === 4 && strlen($month) === 2 && strlen($day) === 2) ? checkdate($month,$year,$day) : false;
   }

 

still no good :/

 

It only seems to work when the field is left blank.

[rajivgonsalves]

how are you calling the function consider the following

 

<?php
   function dateValidation($date)
   {
        @list ($year, $month, $day) = explode('-', $date);
        return (strlen($year) === 4 && strlen($month) === 2 && strlen($day) === 2) ? checkdate($month,$year,$day) : false;
   }
   var_dump(dateValidation(""));

?>

[SchweppesAle]

whoops. nevermind, seems both algorithms work.  I goofed ><

 

if($endDate)
{
  $endDate = '1970-01-31';
}

 

instead of

if(!$this->dateValidation($endDate))
        {
            $endDate = '1970-01-31';
        }

 

[SchweppesAle]

thanks by the way