怎么获取2014-11-12三天前的日期

$time='2014-11-12';

怎么echo到2014-11-09

回复讨论(解决方案)

<?php$time='2014-11-12';echo date('Y-m-d',strtotime("$time-3 days"));?>

$conn=mysqli_connect('localhost','root','root');$res=mysqli_query($conn,"SELECT ADDDATE('2014-11-12',INTERVAL -3 DAY)");$row=mysqli_fetch_array($res);echo $row[0];

2014-11-09