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@ 2015-04-03T10:17:05Z

<?php

$date1 = '2000-01-25';
$date2 = '2010-02-20';

$ts1 = strtotime($date1);
$ts2 = strtotime($date2);

$year1 = date('Y', $ts1);
$year2 = date('Y', $ts2);

$month1 = date('m', $ts1);
$month2 = date('m', $ts2);

$diff = (($year2 - $year1) * 12) + ($month2 - $month1);

Output
Performance
VLD
References
Branches

date: documentation ( source)
strtotime: documentation ( source)

preferences:dark modelive preview

52.9 ms | 402 KiB | 5 Q