原文地址：http://www.jb51.net/article/69396.htm

 

1方法

/**      * @uses 根据生日计算年龄，年龄的格式是：2016-09-23      * @param string $birthday      * @return string|number      */      public function calcAge($birthday) {          $iage = 0;          if (!empty($birthday)) {              $year = date('Y',strtotime($birthday));              $month = date('m',strtotime($birthday));              $day = date('d',strtotime($birthday));                            $now_year = date('Y');              $now_month = date('m');              $now_day = date('d');                    if ($now_year > $year) {                  $iage = $now_year - $year - 1;                  if ($now_month > $month) {                      $iage++;                  } else if ($now_month == $month) {                      if ($now_day >= $day) {                          $iage++;                      }                  }              }          }          return $iage;      }

 

2方法

public function calcAge($birthday) {          $age = 0;          if(!empty($birthday)){              $age = strtotime($birthday);              if($age === false){                  return 0;              }                            list($y1,$m1,$d1) = explode("-",date("Y-m-d", $age));                            list($y2,$m2,$d2) = explode("-",date("Y-m-d"), time());                            $age = $y2 - $y1;              if((int)($m2.$d2) < (int)($m1.$d1)){                  $age -= 1;              }          }          return $age;      }