php 判断过去离现在几年的函数(实例代码)

function gettime($worktime){$time=time();$amount=date("Y",$time)-date("Y",strtotime($worktime));if (date("m",$time)<date("m",strtotime($worktime))) {$amount--;}elseif (date("m",$time)==date("m",strtotime($worktime))) {if (date("d",$time)<date("d",strtotime($worktime))) {$amount--;}}return $amount;}