What are some best practices for calculating age in years, months, days, and hours using PHP?

Calculating age in years, months, days, and hours involves determining the difference between the current date and the birthdate, then breaking down that difference into the respective units. One approach is to use the DateTime class in PHP to handle date calculations accurately. 

$birthdate = new DateTime('1990-05-15');
$currentDate = new DateTime();

$interval = $birthdate->diff($currentDate);

$years = $interval->y;
$months = $interval->m;
$days = $interval->d;
$hours = $interval->h;

echo "Age: $years years, $months months, $days days, and $hours hours";

Keywords

PHP date_diff DateTime interval age calculation

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