<?php
/*
* @author Bulent Tezcan. [email protected]
*/
function DateVerify($date,$format)
{
if (!$date or !$format)
return FALSE;
$format = strtoupper($format);
Switch (TRUE)
{
case $format == "DMY":
case $format == "DDMMYY":
$day = substr($date,0,2);
$month = substr($date,2,2);
$year = substr($date,4,2);
break;
case $format == "D/M/Y":
case $format == "D:M:Y":
case $format == "D-M-Y":
case $format == "D_M_Y":
case $format == "D M Y":
case $format == "D.M.Y":
$day = substr($date,0,2);
$month = substr($date,3,2);
$year = substr($date,6,2);
break;
case $format == "MDY":
case $format == "MMDDYY":
$month = substr($date,0,2);
$day = substr($date,2,2);
$year = substr($date,4,2);
break;
case $format == "M/D/Y":
case $format == "M:D:Y":
case $format == "M-D-Y":
case $format == "M_D_Y":
case $format == "M D Y":
case $format == "M.D.Y":
$month = substr($date,0,2);
$day = substr($date,3,2);
$year = substr($date,6,2);
break;
case $format == "DDMMYYYY":
$day = substr($date,0,2);
$month = substr($date,2,2);
$year = substr($date,4,4);
break;
case $format == "DD/MM/YYYY":
case $format == "DD:MM:YYYY":
case $format == "DD-MM-YYYY":
case $format == "DD_MM_YYYY":
case $format == "DD MM YYYY":
case $format == "DD.MM.YYYY":
$day = substr($date,0,2);
$month = substr($date,3,2);
$year = substr($date,6,4);
break;
case $format == "MMDDYYYY":
$month = substr($date,0,2);
$day = substr($date,2,2);
$year = substr($date,4,4);
break;
case $format == "MM/DD/YYYY":
case $format == "MM:DD:YYYY":
case $format == "MM-DD-YYYY":
case $format == "MM_DD_YYYY":
case $format == "MM DD YYYY":
case $format == "MM.DD.YYYY":
$month = substr($date,0,2);
$day = substr($date,3,2);
$year = substr($date,6,4);
break;
}
if ( IsMonthOk($month) and IsDayOk($day,$month,$year) )
return TRUE;
else
return FALSE;
}
function IsDayOk($day,$month,$year)
{
if ($month == 1 || $month == 3 || $month == 5 || $month == 7
|| $month == 8 || $month == 10 || $month == 12)
{
if ($day >= 1 && $day <= 31)
$result = 1;
else
$result = 0;
}
else if ($month == 2)
{
if ($day >= 1 && $day <=28)
$result = 1;
else if ($day == 29 && ($year % 4) == 0)
$result = 1; // valid leap-year
else if ($day == 29 && ($year % 4) != 0)
$result = 0;
else
$result = 0;
}
else
{
if ($day >= 1 && $day <= 30)
$result = 1;
else
$result = 0;
}
return $result;
}
function IsMonthOk($month)
{
if($month <= 12 && $month != 0)
$result = 1;
else
$result = 0;
return $result;
}
?>
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