php根据生日计算年龄的方法


            本文实例讲述了php根据生日计算年龄的方法。分享给大家供大家参考。具体如下：





<?php 

function birthday($birthday){ 

 $age = strtotime($birthday); 

 if($age === false){ 

  return false; 

 } 

 list($y1,$m1,$d1) = explode("-",date("Y-m-d",$age)); 

 $now = strtotime("now"); 

 list($y2,$m2,$d2) = explode("-",date("Y-m-d",$now)); 

 $age = $y2 - $y1; 

 if((int)($m2.$d2) < (int)($m1.$d1)) 

  $age -= 1; 

 return $age; 

} 

echo birthday('1986-07-22'); 

?>







再来个简单点的，感觉没有上面的高大上





<?php

echo birthday("1989-01-25");

function birthday2($birthday){

  list($year,$month,$day) = explode("-",$birthday);

  $year_diff = date("Y") - $year;

  $month_diff = date("m") - $month;

  $day_diff  = date("d") - $day;

  if ($day_diff < 0 || $month_diff < 0)

   $year_diff--;

  return $year_diff;

}



希望本文所述对大家的php程序设计有所帮助。