PHP_comparison days between 2date - php

Question

i write code in php and i get all days between 2date
function getDatesBetween2Dates($startTime, $endTime){
$day = 86400;
$format = 'Y-m-d';
$startTime = strtotime($startTime);
$endTime = strtotime($endTime);
$numDays = round(($endTime - $startTime) / $day) + 1;
$days = array();
for ($i = 0; $i < $numDays; $i++) {
$days[] = date($format, ($startTime + ($i * $day)));
}
return $days;
}
$days = getDatesBetween2Dates($_POST['periodfrom'], $_POST['periodto']);
foreach($days as $key => $value){
echo $daydatey = date('Y-m-d', strtotime($value));
//contain days between 2date from my form
}
$days2 = getDatesBetween2Dates($ppfr, $ppto);
foreach($days2 as $key2 => $value2){
echo $daydatey2 = date('Y-m-d', strtotime($value2));
}
Contain days between 2date from my DB
I just need to make comparison between $days and $days2 to check if any days in($days) exist or equal or like days in ($days2) just that. Please help.

Answer 1

I suggest you take a look at DateTime::diff / date_diff..
http://php.net/manual/en/datetime.diff.php (OOP)
http://php.net/manual/en/function.date-diff.php (Procedural)
This does however require php 5.3+ so ignore this answer if you are below that.
Example:
<?php
$datetime1 = new DateTime('2009-10-11');
$datetime2 = new DateTime('2009-10-13');
$interval = $datetime1->diff($datetime2);
echo $interval->format('%R%a days');
?>