php简单计算年龄的方法(周岁与虚岁)

/*** $date是时间戳* $type为1的时候是虚岁,2的时候是周岁*/function getAgeByBirth($date,$type = 1){   $nowYear = date("Y",time());   $nowMonth = date("m",time());   $nowDay = date("d",time());   $birthYear = date("Y",$date);   $birthMonth = date("m",$date);   $birthDay = date("d",$date);   if($type == 1){    $age = $nowYear - ($birthYear - 1);   }else{$type == 2}{    if($nowMonth<$birthMonth){     $age = $nowYear - $birthYear - 1;    }elseif($nowMonth==$birthMonth){     if($nowDay<$birthDay){      $age = $nowYear - $birthYear - 1;     }else{      $age = $nowYear - $birthYear;     }    }else{     $age = $nowYear - $birthYear;    }   }   return $age;}