Simple implementation of PHP timestamp and specific time conversion, PHP specific time conversion_PHP tutorial

A simple implementation of PHP timestamp and specific time conversion, PHP specific time conversion

Three built-in functions:

time()   //获取UNIX系统时间戳

mktime(hour,minute,second,month,day,year)  //将指定时间转化为时间戳

date(时间格式，时间戳)   //将时间戳转化为方便阅读的时间

time -> date:

$now = time();
echo "时间戳是 " .$now;
echo "创建日期是 " . date("Y-m-d h:i:s", $now);

输出：

时间戳是 1404610907
创建日期是 2014-07-06 09:41:47

mktime -> date:

$d=mktime(9, 41, 47, 7, 6, 2014);
echo "时间戳是 " .$d;
echo "创建日期是 " . date("Y-m-d h:i:s", $d);

输出：
时间戳是 1404610907
创建日期是 2014-07-06 09:41:47

Note:

Generally, when registering or logging in, the time function is used by default to obtain the current timestamp. When there is a business that needs to specify a specific time, the mktime function can be used to convert it into a specific timestamp according to the specific time, and the date function can be used to convert the timestamp. The reverse is converted into a specific time for easy viewing.

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