What are the implications of using different PHP functions or external sources for age calculation accuracy?

Different PHP functions or external sources may provide varying levels of accuracy when calculating age, leading to inconsistencies in results. To ensure accurate age calculation, it is important to use reliable functions or sources that take into account factors such as leap years and time zones. 

// Calculate age accurately using DateTime object
$birthDate = new DateTime('1990-01-01');
$today = new DateTime();
$age = $today->diff($birthDate)->y;

echo "Age: " . $age;

Keywords

PHP age calculation functions external sources accuracy

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