PHP date_default_timezone_get() – Retrieve the Default Timezone Used by Date/Time Functions

The PHP function date_default_timezone_get() returns the default timezone used by all date/time functions in the current script.

It follows a specific order: first, any timezone set via date_default_timezone_set(); if none, the value from the date.timezone setting in php.ini; otherwise, the system's timezone.

The function returns a string representing the timezone identifier.

Example usage:

<?php
date_default_timezone_set('Europe/London');
if (date_default_timezone_get()) {
    echo 'date_default_timezone_set: ' . date_default_timezone_get() . '<br />';
}
if (ini_get('date.timezone')) {
    echo 'date.timezone: ' . ini_get('date.timezone');
}
?>

Typical output:

date_default_timezone_set: Europe/London
date.timezone: Europe/London