setTimestamp() to set ISO Date
setTimestamp ($unixtimestamp);date_timestamp_set ($date_obj,$unixtimestamp);| Parameter | DESCRIPTION |
|---|---|
| $date_obj | Required : Input date object to be assigned new value. |
| $unixtimestamp | Required: Integer , Timestamp of new date and time |
mktime() function to generate timestamp
Generate timestamp using date and time
Object Oriented style
$date = new DateTime();
$date->setTimestamp(1580774387);
echo $date->format('U = Y-m-d H:i:s'); // Output is 1580774387 = 2020-02-04 05:29:47Procedural style
$date = date_create();
date_timestamp_set($date, 1671851396);
echo date_format($date, 'U = Y-m-d H:i:s') // Output is 1671851396 = 2022-12-24 08:39:56Examples of Uses of Timestamp
Sometime we store timestamp of any event in an integer field in MySQL database instead of storing date and time. Say for example last login time of a user to your forum is stored in MySQL database. After collecting timestamp from table for the user, we can store the last login details like below. We have not discussed how to collect the data from MySQL here , you can read more on this in our MySQL section.$last_login = new DateTime(); // create a date object
$last_login->setTimestamp(1516245357); // Timestamp of 2018-01-18 08:45:57
$date = new DateTime(); // date object showing current time
$date= $date->diff($last_login);
echo $date->format('%y Years, %m Months, %d Days'); //1 Years, 0 Months, 15 DaysWe used date difference function.
PHP Date Functions setDate() : Set date for date object Timestamp in PHP Displaying calendar for selection of date by user
Subhendu Mohapatra
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