如何在PHP中查看超过6个月的日期范围？

Question

What I want to do is check the date range cannot more than 6 months, else will return false

here is my sample code

<?php
$date_string1 = "2013-01-01";
$date_string2 = "2013-08-01";
$date1 = date('Y-m-d',strtotime($date_string1));
$date2 = date('Y-m-d',strtotime($date_string2));

if ($date1 and $date2 range more than 6 months, so will){
   return false;
}else{
   return true;
}
?>

here is my GUI

Any idea how to solve my problem? thanks

Answer 1

$date1 = DateTime::createFromFormat('Y-m-d', "2013-01-01");
$date2 = DateTime::createFromFormat('Y-m-d', "2013-08-01");
$interval = $date1->diff($date2);
$diff = $interval->format('%m');

if($diff > 6){
 echo 'false';
}else{
 echo 'true';
}