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PHP Date and Time

DATE:

The PHP date() function formats a date or time.

The timestamp is used to format a more readable date and time into a PHP date () function.

php date and time

Syntax: 

date(format,timestamp)

Simple Date:

Characters that are mainly used for dates:

d: The “d” is used to get the day of the month (from 1 to 31).

m: The “m” is used to get the month (From (1) to (12)).

y: The “y” is used to get the year ( in four digits).

l: The lowercase (l) is used to represent the day of the week.

Other special characters, like “/”, “.”, or “-“ can also be used between the characters to add additional formatting.

Example1: 

"; 
 echo "Today is” . date("m/d/Y") . "
"; 
 echo "Today is” . date("Y/m/d") . "
"; 
 ?>

Output:

Today is 22/06/2019
Today is 06/22/2019
Today is 2019/06/22

-> In the above example, we get to know that we can write a date into a different format with the help of characters.

Example2:

"; 
 ?>

Output:

Today`s Date Is 2019.06.22

Example3:

"; 
 echo "Today " . date("d") . "
"; 
 echo  date("M") . "
"; 
 echo " Year " . date("Y") . "
"; 
 ?>

Output: 

Hello Saturday
Today 22
Jun
Year 2019
  • In the above example, “M” is used to define the month name.

With the help of the date() function, we can update copyright year on our website.

Example4:

© 2018-|All Rights Reserved|www.tutorialandexample.com|

Output: 

  © 2018-2019|All Rights Reserved|www.tutorialandexample.com|

Example5:

Output:

Date is valid

Example6:

";
 print_r($sun);
 echo date("H:i:s",$sun);
 ?>

Output:

Array
 (
    [sunrise] => 1561247655
    [sunset] => 1561297943
    [transit] => 1561272799
    [civil_twilight_begin] => 1561246042
    [civil_twilight_end] => 1561299557
    [nautical_twilight_begin] => 1561244083
    [nautical_twilight_end] => 1561301515
    [astronomical_twilight_begin] => 1561241999
    [astronomical_twilight_end] => 1561303599
)
01:54:15
  • In the above example, with the help of our current location longitude and latitude, we can easily find the sunrise, sunset, current time, etc.

TIME:

Characters that are mainly used for time:

H: The H character is used for 24hour format (00 to 23).

h: The lowercase “h” is used for 12hour format of an hour(01 to 12).

i: The lowercase “i” is used for minutes with leading zero(00 to 59).

s: The lowercase “s” is used for seconds with leading zero (00 to 59).

a: The “a” is used for ANTE MERIDIEM (a.m.) or POST MERIDIEM (p.m.).

Time Zone:

We can set a timezone to use; we need the time correct according to a specific location.

If the time we get from the code is not the right time, it is because our server is in another country or it set up on a different timezone.

Example:

Output:

The time is 04:20:19.pm.

PHP mktime() Function:

The timestamp parameter in the date() function defines a timestamp.

The mktime() function returns the Unix timestamp for a date. It contains the number of seconds between the Unix Epoch (June 23, 2019, 00:00:00 GMT).

Syntax:

mktime(hour, minute, second, month, day, year)

Example

Output:

Current Date and Time is 2019-06-23 12:30:10pm
  • In the above example, the mktime() function creates a date and time from several of parameters.

PHP strtotime():

The PHP strtotime() function is used to convert a human-readable string into Unix Time.

Syntax:

strtotime(time,now)

Example1:

" . "
";
 $d=strtotime("next Saturday");
 echo date("d-m-Y h:i:sa", $d) . "
" . "
";
 $d=strtotime("+3 Months");
 echo date("d-m-Y h:i:sa", $d) . "
" . "
";
 $d=strtotime("+6 Years");
 echo date("d-m-Y h:i:sa", $d) . "
" . "
";
 ?>

Output: 

24-06-2019 12:00:00am
29-06-2019 12:00:00am
23-09-2019 10:37:14am
23-06-2025 10:37:14am

Example2:

"; 
 $startdate = strtotime("+2 days", $startdate); 
 } 
 ?>

Output:

Jun 28
Jun 30
Jul 02
Jul 04
Jul 06
Jul 08
Jul 10
Jul 12
Jul 14
Jul 16
Jul 18
Jul 20
Jul 22
Jul 24
Jul 26
Jul 28
Jul 30
Aug 01
Aug 03
Aug 05
Aug 07
  • The second and third line of the above code is telling us about the starting date or day(here we have selected the Friday) which means the execution will start from Friday, and it lasts to 6weeks, and it will return Month and date to the user and it will also return weekdays with the difference of 2.

Example3:

Output:

There are 53 days remain left for Independence Day.
  • In the above example, the ceil function is used by which we calculate the time from the current date to the given date.

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