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FutureDateFormEntry.php
| <?php
/*
* (c) 2006, D.E. Silvia, All rights reserved.
* This code is available for use for non-commercial purposes.
* Free to distribute as long as this copyright information remains intact.
* No modification is authorized. Please, refer bugs/enhancements to
* dsilvia@mchsi.com
*
*
*
* futureDateFormEntry():
* Quick, easy addition of future date fields to HTML code using PHP.
* Handy for requesting expiration dates, dates for delivery, dates for
* appointments, or any web application that requires obtaining a future
* date from the user.
*
* Function requires only 3 arguments if you are happy with the defaults:
* The 3 required arguments are a mechanism for preserving the user's valid
* input from previous edits of the form (re-entrant form code). They may
* be NULL, in which case the default selection parameters apply.
*
$defaultDay: Specific day (may be NULL)
$defaultMonth: Specific month (may be NULL)
$defaultYear: Specific year (may be NULL)
$order='dmy': Euro convention of day:month:year
$alignment='left': standard; can be any "<td align=" value
default selections:
$plusDays=0: assumes same day of month as today's or maximum day
for the given month; number of days you want added
to today's month day
$plusMonths=1: one month in the future; number of months you want
added to today's month
$plusYears=0: current year or next year if current month is 12 [Dec];
number of years you want added to today's year
$futureYears=1: number of years in the future to include in selection
beyond the default selected year.
<select name="input-name":
$dayName='expiryDay'
$monthName='expiryMonth'
$yearName='expiryYear'
*/
function futureDateFormEntry($defaultDay,$defaultMonth,$defaultYear,
$order='dmy',
$plusDays=0,
$plusMonths=1,
$plusYears=0,
$futureYears=1,
$dayName='expiryDay',
$monthName='expiryMonth',
$yearName='expiryYear'
)
{
if($plusYears > $futureYears) $futureYears=$plusYears;
/*
* Yes, I know, this array doesn't account for leap years! So? Is that really a problem?
* The user can always select the 29th of February anyway!
*/
$lastDay=array(0,31,28,31,30,31,30,31,31,30,31,30,31);
$today=getdate();
$tDay=$today[mday];
$tMon=$today[mon];
$tYear=$today[year];
if($tMon == 12)
{
$theYear++;
}
if($defaultDay && $defaultMonth && $defaultYear)
{
if(!validFutureDate($defaultDay,$defaultMonth,$defaultYear))
{
unset($defaultDay,$defaultMonth,$defaultYear);
}
}
$theDay=$tDay+$plusDays;
$theMonth=$tMon+$plusMonths;
if($theMonth > 12) $theMonth-=12;
$theYear=$tYear+$plusYears;
if($theDay > $lastDay[$theMonth]) $theDay=$lastDay[$theMonth];
if($defaultDay) $theDay=$defaultDay;
if($defaultMonth) $theMonth=$defaultMonth;
if($defaultYear) $theYear=$defaultYear;
$mSelect=array_pad(array(''),13,'');
$mSelect[$theMonth]='selected';
$dSelect=array_pad(array(''),32,'');
$dSelect[$theDay]='selected';
$entryStr='';
for($i=0; $i < 3; $i++)
{
if($order[$i] == "m")
$entryStr.='
<select name="'.$monthName.'">
<option '.$mSelect[1].' value="1">1 [Jan]</option><option '.$mSelect[2].' value="2">2 [Feb]</option>
<option '.$mSelect[3].' value="3">3 [Mar]</option><option '.$mSelect[4].' value="4">4 [Apr]</option>
<option '.$mSelect[5].' value="5">5 [May]</option><option '.$mSelect[6].' value="6">6 [Jun]</option>
<option '.$mSelect[7].' value="7">7 [Jul]</option><option '.$mSelect[8].' value="8">8 [Aug]</option>
<option '.$mSelect[9].' value="9">9 [Sep]</option><option '.$mSelect[10].' value="10">10 [Oct]</option>
<option '.$mSelect[11].' value="11">11 [Nov]</option><option '.$mSelect[12].' value="12">12 [Dec]</option>
</select>';
if($order[$i] == "d")
$entryStr.='
<select name="'.$dayName.'">
<option '.$dSelect[1].' value="1"> 1</option><option '.$dSelect[2].' value="2"> 2</option>
<option '.$dSelect[3].' value="3"> 3</option><option '.$dSelect[4].' value="4"> 4</option>
<option '.$dSelect[5].' value="5"> 5</option><option '.$dSelect[6].' value="6"> 6</option>
<option '.$dSelect[7].' value="7"> 7</option><option '.$dSelect[8].' value="8"> 8</option>
<option '.$dSelect[9].' value="9"> 9</option><option '.$dSelect[10].' value="10">10</option>
<option '.$dSelect[11].' value="11">11</option><option '.$dSelect[12].' value="12">12</option>
<option '.$dSelect[13].' value="13">13</option><option '.$dSelect[14].' value="14">14</option>
<option '.$dSelect[15].' value="15">15</option><option '.$dSelect[16].' value="16">16</option>
<option '.$dSelect[17].' value="17">17</option><option '.$dSelect[18].' value="18">18</option>
<option '.$dSelect[19].' value="19">19</option><option '.$dSelect[20].' value="20">20</option>
<option '.$dSelect[21].' value="21">21</option><option '.$dSelect[22].' value="22">22</option>
<option '.$dSelect[23].' value="23">23</option><option '.$dSelect[24].' value="24">24</option>
<option '.$dSelect[25].' value="25">25</option><option '.$dSelect[26].' value="26">26</option>
<option '.$dSelect[27].' value="27">27</option><option '.$dSelect[28].' value="28">28</option>
<option '.$dSelect[29].' value="29">29</option><option '.$dSelect[30].' value="30">30</option>
<option '.$dSelect[31].' value="31">31</option>
</select>';
if($order[$i] == "y")
{
$entryStr.='
<select name="'.$yearName.'">';
for($j=$tYear; $j < $theYear; $j++)
{
$entryStr.='
<option value="'.$j.'">'.$j.'</option>';
}
$entryStr.='
<option selected value="'.$theYear.'">'.$theYear.'</option>';
for($j=1; $j <= $futureYears; $j++)
{
$nYear=$theYear+$j;
$entryStr.='
<option value="'.$nYear.'">'.$nYear.'</option>';
}
$entryStr.='
</select>';
}
}
return $entryStr;
}
/*
* argument values are assumed to be returns from a form entry generated
* by futureDateFormEntry(). As such, the year can never be in the past.
*/
function validFutureDate($theDay,$theMonth,$theYear)
{
$today=getdate();
$tDay=$today[mday];
$tMon=$today[mon];
$tYear=$today[year];
$cmpMon=$theMonth;
$goodDate=true;
if($theYear > $tYear)
{
$cmpMon+=12;
}
/* is it in the 'long' past? */
if($cmpMon < $tMon)
{
$goodDate=false;
}
/* is it recent past or today? */
elseif($theDay <= $tDay && $cmpMon == $tMon && $theYear == $tYear)
{
$goodDate=false;
}
return $goodDate;
}
?> | |
Usage Exmaple
| <?php
include('FutureDateFormEntry.php');
$userName=$_REQUEST[yourName];
$enteredDay=$_REQUEST[expiryDay];
$enteredMonth=$_REQUEST[expiryMonth];
$enteredYear=$_REQUEST[expiryYear];
$goodEntry=true;
$entryMade=($enteredDay && $enteredMonth && $enteredYear);
if($entryMade)
$goodEntry=validFutureDate($enteredDay,$enteredMonth,$enteredYear);
*/
?>
<html>
<head>
<title>Untitled</title>
</head>
<body>
<?php
if($entryMade && !$userName)
{
print("Name field is empty<br />");
}
if(!$goodEntry)
{
print($enteredDay."/".$enteredMonth."/".$enteredYear." is not in the future<br />");
}
elseif($entryMade)
{
print($enteredDay."/".$enteredMonth."/".$enteredYear." is a valid future date<br />");
}
?>
<form method="post" action="test.php">
<input name="yourName" type="text" value="<?php print($userName); ?>"> Your Name<br />
<?php print(futureDateFormEntry($enteredDay,$enteredMonth,$enteredYear)); ?>
Give me some date in the Future<br />
<input name="gotEntry" type="submit" value="Submit">
</form>
</body>
</html> | |
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