<?php $today_y = date("Y"); $today_m = date("m"); $today_d = date("d"); list($birthday_y, $birthday_m, $birthday_d) = explode('/', str_replace('-','/',$birthday)); $age = $today_y - $birthday_y; //誕生日前なら１才引く if( $today_m*100 + $today_d < $birthday_m*100 + $birthday_d ){ $age--; } echo $age;
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