学步园

/**
 * @desc 根据生日获取年龄
 * @param     string $birthday
 * @return    integer 
 */
function getAge($birthday) {
	$birthday=getDate(strtotime($birthday));  
	$now=getDate();
	$month=0;
	if($now['month']>$birthday['month'])
	$month=1;
	if($now['month']==$birthday['month']) 
	if($now['mday']>=$birthday['mday'])
	$month=1;
	return $now['year']-$birthday['year']+$month;
}