PHP基于DateTime类解决Unix时间戳与日期互转问题【

//1、Unix时间戳转日期
function unixtime_to_date($unixtime, $timezone = 'PRC') {
  $datetime = new DateTime("@$unixtime"); //DateTime类的bug，加入@可以将Unix时间戳作为参数传入
  $datetime->setTimezone(new DateTimeZone($timezone));
  return $datetime->format("Y-m-d H:i:s");
}
//2、日期转Unix时间戳
function date_to_unixtime($date, $timezone = 'PRC') {
  $datetime= new DateTime($date, new DateTimeZone($timezone));
  return $datetime->format('U');
}
echo date_to_unixtime("1900-1-31 00:00:00"); //输出-2206425952
echo '<br>';
echo unixtime_to_date(date_to_unixtime("1900-1-31 00:00:00")); //输出1900-01-31 00:00:00