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Code contains a fully functional illustrative example.
Useful for determining, say, if a date a user has entered falls during your vacation?;)
DateSpan.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
Simple function to check if a given date falls within a given time span.
Arguments are arrays of the form array(dayNum,monthNum,yearNum) as recognized
by the standard php function mktime().
*/
function dateBetween($start,$end,$theDate)
{
$startES=dateAryEStime($start);
$endES=dateAryEStime($end);
$findES=dateAryEStime($theDate);
return ($startES <= $findES && $findES <= $endES);
}
function dateAryEStime($theDate)
{
return dateEStime($theDate[0],$theDate[1],$theDate[2]);
}
function dateEStime($theDay,$theMonth,$theYear)
{
return mktime(0,0,0,$theMonth,$theDay,$theYear);
}
?> | |
Usage Example
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A simple illustrator to show how the functions are used.
btw, ES|es stands for 'Epoch Seconds'
<?php
include_once('DateSpan.php');
$startDate=array(1,1,2006);
$endDate=array(1,1,2007);
$find[0]=array(1,8,2007);
$find[1]=array(4,8,2006);
$esTime1=dateAryEStime($startDate);
$esTime2=dateAryEStime($endDate);
$date1=date("M-d-Y",$esTime1);
$date2=date("M-d-Y",$esTime2);
for($i=0; $i < 2; $i++)
{
$date3=date("M-d-Y",dateAryEStime($find[$i]));
if(dateBetween($startDate,$endDate,$find[$i]))
{
print("$date3 falls between $date1 and $date2 (inclusive)<br />");
}
else
{
print("$date3 falls outside $date1 and $date2 (inclusive)<br />");
}
}
?> | |
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