本文實例講述了PHP常用函數之根據生日計算年齡功能。分享給大家供大家參考，具體如下：
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/** * 根據出生年月日計算出年齡 * @param $birth_year * @param $birth_month * @param $birth_day * @return int */function getAgeByBirth($birth_year,$birth_month,$birth_day){ if(empty($birth_year) || empty($birth_month) || empty($birth_day)){ return 0; } $current_year = date('Y',time()); $current_month = date('m',time()); $current_day = date('d',time()); if($birth_year >= $current_year){ return 0; } $age = $current_year - $birth_year - 1; if($current_month>$birth_month){ return $age+1; }else if($current_month == $birth_month && $current_day>=$birth_day){ return $age+1; }else{ return $age; }}//測試：echo getAgeByBirth('1988','8','8'); |
運行結果：
31
希望本文所述對大家PHP程序設計有所幫助。
原文鏈接：https://www.cnblogs.com/gyfluck/p/8521197.html
