Calculating age in years in php

Age calculation in php

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Declare a function =>

1. function getAge( $dob, $date )
2. {
3.     $dob=strtotime($dob);
4.     $date=strtotime($date);
5.         $age = 0;
6.         while( $date > $dob = strtotime('+1 year', $dob))
7.         {
8.                 ++$age;
9.         }
10.         return $age." years";
11. }