<?php

$tz = new DateTimezone('Europe/Berlin');

$dt = new DateTime();
$dt->setTimezone($tz);

echo '<b>available datetime formats</b>' . PHP_EOL;

echo $dt->format(DateTime::ATOM) . PHP_EOL;
echo $dt->format(DateTime::COOKIE) . PHP_EOL;
echo $dt->format(DateTime::RSS) . PHP_EOL;
echo $dt->format(DateTime::W3C) . PHP_EOL;

echo $dt->format(DateTime::ISO8601) . PHP_EOL;
echo $dt->format(DateTime::RFC822) . PHP_EOL;
echo $dt->format(DateTime::RFC850) . PHP_EOL;
echo $dt->format(DateTime::RFC1036) . PHP_EOL;
echo $dt->format(DateTime::RFC1123) . PHP_EOL;
echo $dt->format(DateTime::RFC2822) . PHP_EOL;
echo $dt->format(DateTime::RFC3339) . PHP_EOL . PHP_EOL;

echo '<b>create DateTime from a string with predefined format</b>' . PHP_EOL;

$dt = DateTime::createFromFormat(
    DateTime::RSS,
    'Sat, 04 Oct 2014 14:38:40 +0200'
);

var_dump($dt);



available datetime formats
2019-12-05T23:48:16+01:00
Thursday, 05-Dec-2019 23:48:16 CET
Thu, 05 Dec 2019 23:48:16 +0100
2019-12-05T23:48:16+01:00
2019-12-05T23:48:16+0100
Thu, 05 Dec 19 23:48:16 +0100
Thursday, 05-Dec-19 23:48:16 CET
Thu, 05 Dec 19 23:48:16 +0100
Thu, 05 Dec 2019 23:48:16 +0100
Thu, 05 Dec 2019 23:48:16 +0100
2019-12-05T23:48:16+01:00

create DateTime from a string with predefined format
object(DateTime)#1477 (3) {
["date"]=>
string(26) "2014-10-04 14:38:40.000000"
["timezone_type"]=>
int(1)
["timezone"]=>
string(6) "+02:00"
}

• Get a list of all possible transliterations
• Using RegexIterator to filter values of collection
• Create a queue with value-priorities

PHP 7.3, Zend 3.0, Symfony 4.3, Laravel 5.8, PHPUnit 8.0, Doctrine 2.10