<?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');

?>

希望本文所述对大家的php程序设计有所帮助。