PHP | timezone_open() Function

The timezone_open() function is an inbuilt function in PHP which is used to create a new DateTimeZone object. The timezone_open() function accepts the timezone as a parameter and returns the DateTimeZone object on success or False on failure.

Syntax:

timezone_open( $timezone )

Parameters: This function accepts single parameter $timezone which is mandatory. It specify the timezone of the new DateTimeZone object to be created.

Return Value: It returns the DateTimeZone object on success or False on failure.

Exceptions: The timezone passed as a parameter must be a supported timezone in PHP else it may result in incorrect results.

Below programs illustrate the timezone_open() function in PHP:

Program 1:

<?php 
  
// Creating a new DateTimeZone object 
$timezone = timezone_open("America/Chicago"); 
  
echo ("The new DateTimeZone object created is " 
              . timezone_name_get($timezone )); 
?> 

Output:

The new DateTimeZone object created is America/Chicago

Program 2:

<?php 
  
// Array of timezones 
$timezones = array('Europe/London', 'Asia/Kolkata'); 
foreach ($timezones as $tz) { 
    $name = timezone_open($tz); 
      
    echo ("The new DateTimeZone object created is "
                . timezone_name_get($name). "<br>"); 
} 
?> 

Output:

The new DateTimeZone object created is Europe/London
The new DateTimeZone object created is Asia/Kolkata

Note: The timezone_open() function gives warning since the timezone passed is not a supported/valid timezone.

Reference: http://php.net/manual/en/function.timezone-open.php

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Shubrodeep Banerjee

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