When developing web applications, time management is often a very important requirement. ThinkPHP5.1 provides some built-in time processing functions, including converting timestamp to date and time, converting date and time to timestamp, and so on. This article will introduce some methods of using time processing functions in ThinkPHP5.1.

1. Convert timestamp to date and time

In PHP, we can use the date() function to convert UNIX timestamp to date and time string. In ThinkPHP5.1, we can use the toDateTimeString() method of the \think\helper\Str class to convert the timestamp into a datetime string.

For example:

use?think\helper\Str;

$time?=?1573679399;
echo?Str::toDateTimeString($time);
//?輸出:?2019-11-14?14:03:19

2. Convert date and time to timestamp

In PHP, we can use the strtotime() function to convert date and time strings to UNIX timestamps . In ThinkPHP5.1, we can use the unixTime() method of the \think\helper\Str class to convert a datetime string into a timestamp.

For example:

use?think\helper\Str;

$datetime?=?'2019-11-14?14:03:19';
echo?Str::unixTime($datetime);
//?輸出:?1573679399

3. Time formatting

In PHP, we can use the date() function to format date and time strings. In ThinkPHP5.1, we can use the dateFormat() method of the \think\helper\Str class to format date and time strings.

For example:

use?think\helper\Str;

$datetime?=?'2019-11-14?14:03:19';
echo?Str::dateFormat($datetime,?'Y年m月d日?H:i:s');
//?輸出:?2019年11月14日?14:03:19

In the dateFormat() method, the first parameter is the date and time string that needs to be formatted, and the second parameter is the format string. Commonly used format strings are as follows:

4. Time difference calculation

In PHP, we can use the strtotime() function to calculate the time difference between two dates and times. In ThinkPHP5.1, we can use the time() method of the \think\helper\Str class to calculate the time difference between two date times.

For example:

use?think\helper\Str;

$start?=?'2019-11-14?14:03:19';
$end?=?'2019-11-15?16:05:12';

$diff?=?Str::time($start,?$end);

echo?$diff->format('%a?天?%h?小時?%i?分鐘?%s?秒');
//?輸出:?1?天?2?小時?1?分鐘?53?秒

In the time() method, the first parameter is the start time, and the second parameter is the end time. If you want to calculate the number of days, hours, minutes, seconds, etc. between two times, you can use the format() method of the DateTime object.

Conclusion

ThinkPHP5.1 provides some built-in time processing functions to facilitate developers to perform time processing in web applications. This article introduces some common time processing functions, including converting timestamp to date time, converting date time to timestamp, time formatting, time difference calculation, etc. Developers can choose some of these functions to use based on actual needs.

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