> I am having some problem with date validation
> I am trying to validate the date in a form Field
> I had provided a text field for date, so have to
> expect all the different possible entry,
> When i tried with checkdate() method it needs the
> parametes in (int month,int date, int year). It make
> the code more complex , What i am looking is some
> thing similar to is_int(), like the one we have in VB
> isdate()
> thanks in advance
There's nothing like that, you have to create it yourself. I personally hate
the three drop down method that someone else suggested, but that's just me.
I prefer to have a text box like you, but tell the user what the accepted
format is. You can then write a simple function to parse their answer and
make sure it's correct. You can also use that function to convert it to a
Unix timestamp or MySQL timestamp.
I prefer to accept my dates in the military format of DDMMMYYYY or DDMMMYY
(17NOV75 or 17NOV1975).
I use this function to validate the input:
//check that date matches 17nov75 or 17nov1975 format.
//if it does, returned as mysql format date yyyymmdd
function date($input,$label,$format)
{
$retval = false;
//defaults
$month_array =
array("jan"=>"01","feb"=>"02","mar"=>"03","apr"=>"04","may"=>"05","jun"=>"06
","jul"=>"07","aug"=>"08","sep"=>"09","oct"=>"10","nov"=>"11","dec"=>"12");
$days_in_month = array(31,28,31,30,31,30,31,31,30,31,30,31);
//verify date matches 17nov75 or 17nov1975 format
if(eregi("^([0-9]{1,2})-?(jan|feb|mar|apr|may|jun|jul|aug|sep|oct|nov|dec)-?
((19|20)?[0-9]{2})$",$input,$regs))
{
//convert month to number
$regs[2] = strtolower($regs[2]);
$month = $month_array[$regs[2]];
//make days two digits if it's not already
$day = $regs[1];
if($day < 10 && strlen($day) == 1) { $day = "0" . $day; }
if($regs[3] < 100)
{
//account for 2 digit year
//< 30 = 20xx
//> 30 = 19xx
if($regs[3] < 30) { $year = "20" . $regs[3]; }
else { $year = "19" . $regs[3]; }
}
else { $year = $regs[3]; }
//verify day does not exceed days in month
if(($day <= $days_in_month[$month-1] && $day > 0) || ($day==29
&& $month==2 && $year%4==0))
{
$retval = $year.$month.$day;
}
else
{
$this->error[] = $label . ": date has invalid day";
}
}
else
{
$this->error[] = $label . ": date does not match format of
17NOV75 or 17NOV1975";
}
return $retval;
}
---John Holmes...
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