本文实例讲述了PHP常用函数之根据生日计算年龄功能。分享给大家供大家参考，具体如下：
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/** * 根据出生年月日计算出年龄 * @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; }}//测试：echo getAgeByBirth('1988','8','8'); |
运行结果：
31
希望本文所述对大家PHP程序设计有所帮助。
原文链接：https://www.cnblogs.com/gyfluck/p/8521197.html
