php根据生日计算年龄
<?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'); ?>