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run code in 150+ php & hhvm versions
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<?php function dob ($birthday){ list($day,$month,$year) = explode("/",$birthday); $year_diff = date("Y") - $year; $month_diff = date("m") - $month; $day_diff = date("d") - $day; if ($day_diff < 0 || $month_diff < 0) $year_diff--; return $year_diff; }
Output for 4.3.0 - 7.1.0