PHP Date Time function and time stamp

PHP TIME STAMP and DATE function

PHP time stamp is a numeric value in seconds between the time at present and the value at Unix Epoch (January 1 1970 00:00:00 GMT). This time of January 1 1970 00:00:00 GMT is taken as base for all time stamp calculations. Below is the time stamp or the number of seconds lapsed after January 1 1970 00:00:00 GMT and when this page is loaded ( or opened by you). You can refresh this page to see the current time stamp. Press the refresh button of your browser to reload this page to see the current time stamp.

Current time stamp= 1680416976

php time stamp generator to find the time stamp of any date

To display current time stamp we have to use time() function like this .

<?Php

 echo time(); 

?>

This line will print the value of current time stamp as displayed at the top. Time stamp is used in many PHP applications and from time stamp the current date and many different date format can be taken by using different functions in PHP. stamp.

Displaying current time

We can display current time by using time() function. Here is the code

echo date(" H:i:s", time());

The output is here 11:59:36

JavaScript we can display real time changing clock

Show current time & date by using localtime function in PHP

Here is the current time stamp again : 1680416976
From the value above let us display the

current date and time by using the date function

echo date("m/d/y",time())

Here is the output showing current date and month value using the above timestamp.

 04/02/23

Format for MySQL datetime field

MySQL datetime field stores date with time. Here is the format required to store data in this field.

$tdtp=date("Y-m-d  H:i:s",time());

Here is the output

2023-04-02  11:59:36

You can find detail php date today functions and php date formats in other tutorials in this section.

If you want to display the current time along with the date then change the format of the date function like this

date("d/m/y : H:i:s", time());

the out put of this will be like this :

 02/04/23 : 11:59:36

Don't forget to refresh this page to see how the value changes.

Please note that the current date and time value displayed will be affected by default time zone set in your php.ini file of the server.

If you are testing this script in your local machine then take care of time zone setting in your php.ini file is set to your time zone.

You can change your time zone setting at your script page level by using this command

date_default_timezone_set ("Asia/Calcutta");

Or ( one more example )


date_default_timezone_set ("America/Denver");

You can create two demo pages to understand concept of Time stamp.

Using html meta page refresh, create page which will reload itself at every 10 seconds and display the updated timestamp.
Try to display the timestamp in every 10 second duration without reloading the page. ( Use Ajax )

Solution: Server Clock using Ajax

Date Picker by using Calendar

By using JavaScript we can display current month calendar and user can select a date from the calendar to input to a textbox. User can browse to different months of the calendar and select different dates.

User can also select two dates indicating Start date and end date.

Date picker by using JQuery

Jquery widget for calendar can be easily integrated to any website, you can set a range, disable dates and apply many other requirements easily.

Date Picker using JQuery

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