A variant of the timestamp
The timestamp timestamp can have multiple different characteristics when it is created, such as:
1. Refresh the data column when creating a new record and modifying an existing record:
TIMESTAMP DEFAULT
Mysql TIMESTAMP Usage Details, mysqltimestamp
1. TIMESTAMP variants
TIMESTAMP timestamps can have multiple different features during creation, such:
1. Refresh the data column when creating a new record or modifying an existing record:
TIMESTAMP
Objective
The instantiation object is preceded by the use of the native class in the namespace, and if the namespace is not used, the preceding \ can be deleted
1. Output Current time
$datetime = new \datetime;
Print_r ($datetime->format ('
In this paper, the methods used by the DateTime object are collated to make it easy for us to find and flip through, so we can refer to learning.
Objective
The instantiation object is preceded by \ means that the native class is used in the
Python processes the time and date modules, mainly using the datetime, time, and calendar modules. The following article mainly introduces the datetime module in Python. you can refer to it for reference. let's take a look at it. Preface
Python
Text: PHP Gets the current time, timestamp of the various formats summary [datetime]Today write down PHP, how to get the current system time, time stamp, and note the meaning of various formats, can be flexible.1. Get the current Time method date
Unix epoch Time, also known as POSIX time/epoch time, is the total number of seconds from 0 seconds from January 1, 1970 0:0 UTC to the present, excluding leap seconds. A positive value represents 1970, and a negative value indicates before
There are a variety of ways to get timestamps in PHP, and usually get time is the UNIX timestamp and we normally see the time is not the same, then we need to format this, this article is about PHP gets to the current time and PHP to the UNIX
1. Get the current Time method date ()Quite simply, this is the way to get the time, in the format: Date ($format, $timestamp), format, timestamp timestamp – The parameter can be filled.2. Get timestamp method Time (), Strtotime ()Both of these
Beginner Php+mysql, when developing a simple registration process, it is required to add a date field after each newly inserted record to facilitate later query and sorting. So immediately Baidu, found that you can use DateTime or timestamp two
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