Comparing Dates, and Dates Difference
<?php
$dvone = new DateTime('August 1, 1972') ;
$spike = new DateTime('August 13, 1970') ;
// who's older?
if ( $dvone < $spike ) {
echo 'Von is older than Spike';
}
else {
echo 'Spike is older than D-Von';
}
// Age Difference
$age_diff = $dvone->diff($spike) ;
echo $age_diff->format("There is %y years, and %m months and %d days between Spike and DVon") ;