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PHP | timezone_open() Function

PHP timezone_open() Function

Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP timezone_open() Function.

The built-in timezone_open() function is an alias of DateTimeZone::_construct(). This function accepts TimeZone string value as a parameter and creates a DateTimeZone object.


Following below is the syntax to use this function -


Parameter Details

Sr.NoParameter & Description

timezone (Mandatory)

This is a string value representing a timezone.

Return Value

It returns the DateTimeZone object. In case of failure, this function returns the boolean value false.

PHP Version

This PHP function was first introduced as part of core PHP v 5.2.0 and, it works with all the later versions.


Below example demonstrates the usage of the PHP timezone_open() function -

   $tz = "Nigeria/Rivers";
   $res = timezone_open($tz);   


When the above code is executed, it will produce the following result -

DateTimeZone Object
  [timezone_type] => 3
  [timezone] => Nigeria/Rivers


Try the following example -

$dateSrc = '2017-06-25 1:50 GMT';
$dateTime = date_create( $dateSrc);
$DateTimeZone = timezone_open ( 'America/Chicago' );
date_timezone_set( $dateTime, $DateTimeZone );
$NewDateTimeZone = date_timezone_get($dateTime);
echo 'New timeZone is '. timezone_name_get($NewDateTimeZone);
echo "\n";

# Using second function.
$dateTime = new DateTime($dateSrc);
$DateTimeZone = new DateTimeZone( 'America/Chicago' );
$dateTime->setTimezone( $DateTimeZone );
$NewDateTimeZone = $dateTime->getTimezone ();
echo 'New timeZone is '. timezone_name_get ($NewDateTimeZone);


When the above code is executed, it will produce the following result -

New timeZone is America/Chicago
New timeZone is America/Chicago

Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the PHP timezone_transitions_get() Function.

Do feel free to ask your questions where necessary and we will attend to them as soon as possible. If this tutorial was helpful to you, you can use the share button to share this tutorial.

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Thanks for reading and bye for now.

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