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<?php $dt = '1990-07-22 00:00:00'; $year = 60 * 60 * 24 * 365; var_dump([ 'year' => $year, 'now' => time(), 'age' => floor(abs((time() - strtotime($dt))/$dateTime::YEAR)), ]);

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39.11 ms | 402 KiB | 5 Q