Export ISO 3166-1 country codes and PHP time zones per countries

export_countries_time_zones.php

<?php
$contents = trim(file_get_contents('http://www.iso.org/iso/list-en1-semic-3.txt'));
if (empty($contents)) {
	throw new \Exception('Could not get list of ISO country codes from iso.org');
}
$countries = array();
$timeZones = array();
foreach(explode(PHP_EOL, $contents) as $line) {
	if (preg_match('/^(.+?);([A-Za-z]{2})$/', trim($line), $matches)) {
		$code = $matches[2];
		$countries[$code] = mb_convert_case($matches[1], MB_CASE_TITLE);
		$timeZones[$code] = array_flip(\DateTimeZone::listIdentifiers(\DateTimeZone::PER_COUNTRY, $code));
		foreach($timeZones[$code] as $tz => $v) {
			$timeZones[$code][$tz] = str_replace(array('/', '_'), array(' > ', ' '), $tz);
		}
	}
}

header('Content-type: text/plain');
echo 'COUNTRY CODES WITHOUT TIME ZONES: ' . implode(', ', array_keys(array_diff_key($timeZones, array_filter($timeZones))));
foreach(array('countries', 'timeZones') as $var) {
	echo "\n\n";
	echo str_replace('  ', "\t", preg_replace('/\n*\s*array/', ' array', var_export($$var, true)));
}
?>

http://www.iso.org/iso/list-en1-semic-3.txt has expired