<?php
$event_date = '2010-01-01 00:00:00';
$event_time = strtotime($event_date);
$diff = $event_time - time();
echo floor($diff/(24*60*60)).' days to go for the great event';
?>
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注意:我完全支持任何时区考虑因素,因此,请务必阅读与使用PHP datetime函数相关的时区问题.