How to solve the problem of converting Unix timestamp and date in PHP based on DateTime class

This article mainly introduces PHP's solution to the problem of Unix timestamp and date conversion based on the DateTime class. It uses the DateTime class to solve the problem of displaying and calculating timestamps before 1970 and after 2038. It is very simple and practical, and the code has more Detailed comments are easy to understand. Friends in need can refer to

. This article describes how PHP solves the problem of Unix timestamp and date conversion based on the DateTime class. Share it with everyone for your reference, the details are as follows:

This problem mainly occurs in 32-bit systems, and there is no such problem in 64-bit systems. PHP 5.2 provides the DateTime class to handle such problems. The reference plan is as follows (please pay attention to the processing of time zones):

//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 &#39;<br>&#39;;
echo unixtime_to_date(date_to_unixtime("1900-1-31 00:00:00")); //输出1900-01-31 00:00:00

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