Easy push/pop default timezone stack for php

timezone_stack.php

<?php
// Timezone Stack https://gist.github.com/furkanmustafa/8710c43ba8299ca10a32

class TimezoneStack {
	public static $stack = [];

	static function Init() {
		self::$stack[] = @date_default_timezone_get();
	}

	static function Push($timezone) {
		if (!date_default_timezone_set($timezone))
			return false;
		self::$stack[] = $timezone;
		return true;
	}
	static function Pop() {
		if (count(self::$stack) == 1)
			return false;

		$timezone = array_pop(self::$stack);
		date_default_timezone_set($timezone);
		return $timezone;
	}

	static function Using($timezone, $function) {
		self::Push($timezone);
		$function();
		self::Pop();
	}
}

// Alias functions, just to make similar to date_default_timezone_set
function date_default_timezone_push($timezone_identifier) {
	return TimezoneStack::Push($timezone_identifier);
}
function date_default_timezone_pop() {
	return TimezoneStack::Pop();
}

// Example:
//
// TimezoneStack::Using('Asia/Tokyo', function() use ($myObject) {
// 	$myObject->date = strtotime($formdata['date']);
// });