3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $ceu = array( "Italy"=>"Rome", "Luxembourg"=>"Luxembourg", "Belgium"=> "Brussels", "Denmark"=>"Copenhagen", "Finland"=>"Helsinki", "France" => "Paris", "Slovakia"=>"Bratislava", "Slovenia"=>"Ljubljana", "Germany" => "Berlin", "Greece" => "Athens", "Ireland"=>"Dublin", "Netherlands"=>"Amsterdam", "Portugal"=>"Lisbon", "Spain"=>"Madrid", "Sweden"=>"Stockholm", "United Kingdom"=>"London", "Cyprus"=>"Nicosia", "Lithuania"=>"Vilnius", "Czech Republic"=>"Prague", "Estonia"=>"Tallin", "Hungary"=>"Budapest", "Latvia"=>"Riga", "Malta"=>"Valetta", "Austria" => "Vienna", "Poland"=>"Warsaw") ; foreach(array_keys($ceu) as $c) foreach($ceu as $cu) { echo $c."<br>".$cu."<hr>"; }
based on DAhR0
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Italy<br>Rome<hr>Italy<br>Luxembourg<hr>Italy<br>Brussels<hr>Italy<br>Copenhagen<hr>Italy<br>Helsinki<hr>Italy<br>Paris<hr>Italy<br>Bratislava<hr>Italy<br>Ljubljana<hr>Italy<br>Berlin<hr>Italy<br>Athens<hr>Italy<br>Dublin<hr>Italy<br>Amsterdam<hr>Italy<br>Lisbon<hr>Italy<br>Madrid<hr>Italy<br>Stockholm<hr>Italy<br>London<hr>Italy<br>Nicosia<hr>Italy<br>Vilnius<hr>Italy<br>Prague<hr>Italy<br>Tallin<hr>Italy<br>Budapest<hr>Italy<br>Riga<hr>Italy<br>Valetta<hr>Italy<br>Vienna<hr>Italy<br>Warsaw<hr>Luxembourg<br>Rome<hr>Luxembourg<br>Luxembourg<hr>Luxembourg<br>Brussels<hr>Luxembourg<br>Copenhagen<hr>Luxembourg<br>Helsinki<hr>Luxembourg<br>Paris<hr>Luxembourg<br>Bratislava<hr>Luxembourg<br>Ljubljana<hr>Luxembourg<br>Berlin<hr>Luxembourg<br>Athens<hr>Luxembourg<br>Dublin<hr>Luxembourg<br>Amsterdam<hr>Luxembourg<br>Lisbon<hr>Luxembourg<br>Madrid<hr>Luxembourg<br>Stockholm<hr>Luxembourg<br>London<hr>Luxembourg<br>Nicosia<hr>Luxembourg<br>Vilnius<hr>Luxembourg<br>Prague<hr>Luxembourg<br>Tallin<hr>Luxembourg<br>Budapest<hr>Luxembourg<br>Riga<hr>Luxembourg<br>Valetta<hr>Luxembourg<br>Vienna<hr>Luxembourg<br>Warsaw<hr>Belgium<br>Rome<hr>Belgium<br>Luxembourg<hr>Belgium<br>Brussels<hr>Belgium<br>Copenhagen<hr>Belgium<br>Helsinki<hr>Belgium<br>Paris<hr>Belgium<br>Bratislava<hr>Belgium<br>Ljubljana<hr>Belgium<br>Berlin<hr>Belgium<br>Athens<hr>Belgium<br>Dublin<hr>Belgium<br>Amsterdam<hr>Belgium<br>Lisbon<hr>Belgium<br>Madrid<hr>Belgium<br>Stockholm<hr>Belgium<br>London<hr>Belgium<br>Nicosia<hr>Belgium<br>Vilnius<hr>Belgium<br>Prague<hr>Belgium<br>Tallin<hr>Belgium<br>Budapest<hr>Belgium<br>Riga<hr>Belgium<br>Valetta<hr>Belgium<br>Vienna<hr>Belgium<br>Warsaw<hr>Denmark<br>Rome<hr>Denmark<br>Luxembourg<hr>Denmark<br>Brussels<hr>Denmark<br>Copenhagen<hr>Denmark<br>Helsinki<hr>Denmark<br>Paris<hr>Denmark<br>Bratislava<hr>Denmark<br>Ljubljana<hr>Denmark<br>Berlin<hr>Denmark<br>Athens<hr>Denmark<br>Dublin<hr>Denmark<br>Amsterdam<hr>Denmark<br>Lisbon<hr>Denmark<br>Madrid<hr>Denmark<br>Stockholm<hr>Denmark<br>London<hr>Denmark<br>Nicosia<hr>Denmark<br>Vilnius<hr>Denmark<br>Prague<hr>Denmark<br>Tallin<hr>Denmark<br>Budapest<hr>Denmark<br>Riga<hr>Denmark<br>Valetta<hr>Denmark<br>Vienna<hr>Denmark<br>Warsaw<hr>Finland<br>Rome<hr>Finland<br>Luxembourg<hr>Finland<br>Brussels<hr>Finland<br>Copenhagen<hr>Finland<br>Helsinki<hr>Finland<br>Paris<hr>Finland<br>Bratislava<hr>Finland<br>Ljubljana<hr>Finland<br>Berlin<hr>Finland<br>Athens<hr>Finland<br>Dublin<hr>Finland<br>Amsterdam<hr>Finland<br>Lisbon<hr>Finland<br>Madrid<hr>Finland<br>Stockholm<hr>Finland<br>London<hr>Finland<br>Nicosia<hr>Finland<br>Vilnius<hr>Finland<br>Prague<hr>Finland<br>Tallin<hr>Finland<br>Budapest<hr>Finland<br>Riga<hr>Finland<br>Valetta<hr>Finland<br>Vienna<hr>Finland<br>Warsaw<hr>France<br>Rome<hr>France<br>Luxembourg<hr>France<br>Brussels<hr>France<br>Copenhagen<hr>France<br>Helsinki<hr>France<br>Paris<hr>France<br>Bratislava<hr>France<br>Ljubljana<hr>France<br>Berlin<hr>France<br>Athens<hr>France<br>Dublin<hr>France<br>Amsterdam<hr>France<br>Lisbon<hr>France<br>Madrid<hr>France<br>Stockholm<hr>France<br>London<hr>France<br>Nicosia<hr>France<br>Vilnius<hr>France<br>Prague<hr>France<br>Tallin<hr>France<br>Budapest<hr>France<br>Riga<hr>France<br>Valetta<hr>France<br>Vienna<hr>France<br>Warsaw<hr>Slovakia<br>Rome<hr>Slovakia<br>Luxembourg<hr>Slovakia<br>Brussels<hr>Slovakia<br>Copenhagen<hr>Slovakia<br>Helsinki<hr>Slovakia<br>Paris<hr>Slovakia<br>Bratislava<hr>Slovakia<br>Ljubljana<hr>Slovakia<br>Berlin<hr>Slovakia<br>Athens<hr>Slovakia<br>Dublin<hr>Slovakia<br>Amsterdam<hr>Slovakia<br>Lisbon<hr>Slovakia<br>Madrid<hr>Slovakia<br>Stockholm<hr>Slovakia<br>London<hr>Slovakia<br>Nicosia<hr>Slovakia<br>Vilnius<hr>Slovakia<br>Prague<hr>Slovakia<br>Tallin<hr>Slovakia<br>Budapest<hr>Slovakia<br>Riga<hr>Slovakia<br>Valetta<hr>Slovakia<br>Vienna<hr>Slovakia<br>Warsaw<hr>Slovenia<br>Rome<hr>Slovenia<br>Luxembourg<hr>Slovenia<br>Brussels<hr>Slovenia<br>Copenhagen<hr>Slovenia<br>Helsinki<hr>Slovenia<br>Paris<hr>Slovenia<br>Bratislava<hr>Slovenia<br>Ljubljana<hr>Slovenia<br>Berlin<hr>Slovenia<br>Athens<hr>Slovenia<br>Dublin<hr>Slovenia<br>Amsterdam<hr>Slovenia<br>Lisbon<hr>Slovenia<br>Madrid<hr>Slovenia<br>Stockholm<hr>Slovenia<br>London<hr>Slovenia<br>Nicosia<hr>Slovenia<br>Vilnius<hr>Slovenia<br>Prague<hr>Slovenia<br>Tallin<hr>Slovenia<br>Budapest<hr>Slovenia<br>Riga<hr>Slovenia<br>Valetta<hr>Slovenia<br>Vienna<hr>Slovenia<br>Warsaw<hr>Germany<br>Rome<hr>Germany<br>Luxembourg<hr>Germany<br>Brussels<hr>Germany<br>Copenhagen<hr>Germany<br>Helsinki<hr>Germany<br>Paris<hr>Germany<br>Bratislava<hr>Germany<br>Ljubljana<hr>Germany<br>Berlin<hr>Germany<br>Athens<hr>Germany<br>Dublin<hr>Germany<br>Amsterdam<hr>Germany<br>Lisbon<hr>Germany<br>Madrid<hr>Germany<br>Stockholm<hr>Germany<br>London<hr>Germany<br>Nicosia<hr>Germany<br>Vilnius<hr>Germany<br>Prague<hr>Germany<br>Tallin<hr>Germany<br>Budapest<hr>Germany<br>Riga<hr>Germany<br>Valetta<hr>Germany<br>Vienna<hr>Germany<br>Warsaw<hr>Greece<br>Rome<hr>Greece<br>Luxembourg<hr>Greece<br>Brussels<hr>Greece<br>Copenhagen<hr>Greece<br>Helsinki<hr>Greece<br>Paris<hr>Greece<br>Bratislava<hr>Greece<br>Ljubljana<hr>Greece<br>Berlin<hr>Greece<br>Athens<hr>Greece<br>Dublin<hr>Greece<br>Amsterdam<hr>Greece<br>Lisbon<hr>Greece<br>Madrid<hr>Greece<br>Stockholm<hr>Greece<br>London<hr>Greece<br>Nicosia<hr>Greece<br>Vilnius<hr>Greece<br>Prague<hr>Greece<br>Tallin<hr>Greece<br>Budapest<hr>Greece<br>Riga<hr>Greece<br>Valetta<hr>Greece<br>Vienna<hr>Greece<br>Warsaw<hr>Ireland<br>Rome<hr>Ireland<br>Luxembourg<hr>Ireland<br>Brussels<hr>Ireland<br>Copenhagen<hr>Ireland<br>Helsinki<hr>Ireland<br>Paris<hr>Ireland<br>Bratislava<hr>Ireland<br>Ljubljana<hr>Ireland<br>Berlin<hr>Ireland<br>Athens<hr>Ireland<br>Dublin<hr>Ireland<br>Amsterdam<hr>Ireland<br>Lisbon<hr>Ireland<br>Madrid<hr>Ireland<br>Stockholm<hr>Ireland<br>London<hr>Ireland<br>Nicosia<hr>Ireland<br>Vilnius<hr>Ireland<br>Prague<hr>Ireland<br>Tallin<hr>Ireland<br>Budapest<hr>Ireland<br>Riga<hr>Ireland<br>Valetta<hr>Ireland<br>Vienna<hr>Ireland<br>Warsaw<hr>Netherlands<br>Rome<hr>Netherlands<br>Luxembourg<hr>Netherlands<br>Brussels<hr>Netherlands<br>Copenhagen<hr>Netherlands<br>Helsinki<hr>Netherlands<br>Paris<hr>Netherlands<br>Bratislava<hr>Netherlands<br>Ljubljana<hr>Netherlands<br>Berlin<hr>Netherlands<br>Athens<hr>Netherlands<br>Dublin<hr>Netherlands<br>Amsterdam<hr>Netherlands<br>Lisbon<hr>Netherlands<br>Madrid<hr>Netherlands<br>Stockholm<hr>Netherlands<br>London<hr>Netherlands<br>Nicosia<hr>Netherlands<br>Vilnius<hr>Netherlands<br>Prague<hr>Netherlands<br>Tallin<hr>Netherlands<br>Budapest<hr>Netherlands<br>Riga<hr>Netherlands<br>Valetta<hr>Netherlands<br>Vienna<hr>Netherlands<br>Warsaw<hr>Portugal<br>Rome<hr>Portugal<br>Luxembourg<hr>Portugal<br>Brussels<hr>Portugal<br>Copenhagen<hr>Portugal<br>Helsinki<hr>Portugal<br>Paris<hr>Portugal<br>Bratislava<hr>Portugal<br>Ljubljana<hr>Portugal<br>Berlin<hr>Portugal<br>Athens<hr>Portugal<br>Dublin<hr>Portugal<br>Amsterdam<hr>Portugal<br>Lisbon<hr>Portugal<br>Madrid<hr>Portugal<br>Stockholm<hr>Portugal<br>London<hr>Portugal<br>Nicosia<hr>Portugal<br>Vilnius<hr>Portugal<br>Prague<hr>Portugal<br>Tallin<hr>Portugal<br>Budapest<hr>Portugal<br>Riga<hr>Portugal<br>Valetta<hr>Portugal<br>Vienna<hr>Portugal<br>Warsaw<hr>Spain<br>Rome<hr>Spain<br>Luxembourg<hr>Spain<br>Brussels<hr>Spain<br>Copenhagen<hr>Spain<br>Helsinki<hr>Spain<br>Paris<hr>Spain<br>Bratislava<hr>Spain<br>Ljubljana<hr>Spain<br>Berlin<hr>Spain<br>Athens<hr>Spain<br>Dublin<hr>Spain<br>Amsterdam<hr>Spain<br>Lisbon<hr>Spain<br>Madrid<hr>Spain<br>Stockholm<hr>Spain<br>London<hr>Spain<br>Nicosia<hr>Spain<br>Vilnius<hr>Spain<br>Prague<hr>Spain<br>Tallin<hr>Spain<br>Budapest<hr>Spain<br>Riga<hr>Spain<br>Valetta<hr>Spain<br>Vienna<hr>Spain<br>Warsaw<hr>Sweden<br>Rome<hr>Sweden<br>Luxembourg<hr>Sweden<br>Brussels<hr>Sweden<br>Copenhagen<hr>Sweden<br>Helsinki<hr>Sweden<br>Paris<hr>Sweden<br>Bratislava<hr>Sweden<br>Ljubljana<hr>Sweden<br>Berlin<hr>Sweden<br>Athens<hr>Sweden<br>Dublin<hr>Sweden<br>Amsterdam<hr>Sweden<br>Lisbon<hr>Sweden<br>Madrid<hr>Sweden<br>Stockholm<hr>Sweden<br>London<hr>Sweden<br>Nicosia<hr>Sweden<br>Vilnius<hr>Sweden<br>Prague<hr>Sweden<br>Tallin<hr>Sweden<br>Budapest<hr>Sweden<br>Riga<hr>Sweden<br>Valetta<hr>Sweden<br>Vienna<hr>Sweden<br>Warsaw<hr>United Kingdom<br>Rome<hr>United Kingdom<br>Luxembourg<hr>United Kingdom<br>Brussels<hr>United Kingdom<br>Copenhagen<hr>United Kingdom<br>Helsinki<hr>United Kingdom<br>Paris<hr>United Kingdom<br>Bratislava<hr>United Kingdom<br>Ljubljana<hr>United Kingdom<br>Berlin<hr>United Kingdom<br>Athens<hr>United Kingdom<br>Dublin<hr>United Kingdom<br>Amsterdam<hr>United Kingdom<br>Lisbon<hr>United Kingdom<br>Madrid<hr>United Kingdom<br>Stockholm<hr>United Kingdom<br>London<hr>United Kingdom<br>Nicosia<hr>United Kingdom<br>Vilnius<hr>United Kingdom<br>Prague<hr>United Kingdom<br>Tallin<hr>United Kingdom<br>Budapest<hr>United Kingdom<br>Riga<hr>United Kingdom<br>Valetta<hr>United Kingdom<br>Vienna<hr>United Kingdom<br>Warsaw<hr>Cyprus<br>Rome<hr>Cyprus<br>Luxembourg<hr>Cyprus<br>Brussels<hr>Cyprus<br>Copenhagen<hr>Cyprus<br>Helsinki<hr>Cyprus<br>Paris<hr>Cyprus<br>Bratislava<hr>Cyprus<br>Ljubljana<hr>Cyprus<br>Berlin<hr>Cyprus<br>Athens<hr>Cyprus<br>Dublin<hr>Cyprus<br>Amsterdam<hr>Cyprus<br>Lisbon<hr>Cyprus<br>Madrid<hr>Cyprus<br>Stockholm<hr>Cyprus<br>London<hr>Cyprus<br>Nicosia<hr>Cyprus<br>Vilnius<hr>Cyprus<br>Prague<hr>Cyprus<br>Tallin<hr>Cyprus<br>Budapest<hr>Cyprus<br>Riga<hr>Cyprus<br>Valetta<hr>Cyprus<br>Vienna<hr>Cyprus<br>Warsaw<hr>Lithuania<br>Rome<hr>Lithuania<br>Luxembourg<hr>Lithuania<br>Brussels<hr>Lithuania<br>Copenhagen<hr>Lithuania<br>Helsinki<hr>Lithuania<br>Paris<hr>Lithuania<br>Bratislava<hr>Lithuania<br>Ljubljana<hr>Lithuania<br>Berlin<hr>Lithuania<br>Athens<hr>Lithuania<br>Dublin<hr>Lithuania<br>Amsterdam<hr>Lithuania<br>Lisbon<hr>Lithuania<br>Madrid<hr>Lithuania<br>Stockholm<hr>Lithuania<br>London<hr>Lithuania<br>Nicosia<hr>Lithuania<br>Vilnius<hr>Lithuania<br>Prague<hr>Lithuania<br>Tallin<hr>Lithuania<br>Budapest<hr>Lithuania<br>Riga<hr>Lithuania<br>Valetta<hr>Lithuania<br>Vienna<hr>Lithuania<br>Warsaw<hr>Czech Republic<br>Rome<hr>Czech Republic<br>Luxembourg<hr>Czech Republic<br>Brussels<hr>Czech Republic<br>Copenhagen<hr>Czech Republic<br>Helsinki<hr>Czech Republic<br>Paris<hr>Czech Republic<br>Bratislava<hr>Czech Republic<br>Ljubljana<hr>Czech Republic<br>Berlin<hr>Czech Republic<br>Athens<hr>Czech Republic<br>Dublin<hr>Czech Republic<br>Amsterdam<hr>Czech Republic<br>Lisbon<hr>Czech Republic<br>Madrid<hr>Czech Republic<br>Stockholm<hr>Czech Republic<br>London<hr>Czech Republic<br>Nicosia<hr>Czech Republic<br>Vilnius<hr>Czech Republic<br>Prague<hr>Czech Republic<br>Tallin<hr>Czech Republic<br>Budapest<hr>Czech Republic<br>Riga<hr>Czech Republic<br>Valetta<hr>Czech Republic<br>Vienna<hr>Czech Republic<br>Warsaw<hr>Estonia<br>Rome<hr>Estonia<br>Luxembourg<hr>Estonia<br>Brussels<hr>Estonia<br>Copenhagen<hr>Estonia<br>Helsinki<hr>Estonia<br>Paris<hr>Estonia<br>Bratislava<hr>Estonia<br>Ljubljana<hr>Estonia<br>Berlin<hr>Estonia<br>Athens<hr>Estonia<br>Dublin<hr>Estonia<br>Amsterdam<hr>Estonia<br>Lisbon<hr>Estonia<br>Madrid<hr>Estonia<br>Stockholm<hr>Estonia<br>London<hr>Estonia<br>Nicosia<hr>Estonia<br>Vilnius<hr>Estonia<br>Prague<hr>Estonia<br>Tallin<hr>Estonia<br>Budapest<hr>Estonia<br>Riga<hr>Estonia<br>Valetta<hr>Estonia<br>Vienna<hr>Estonia<br>Warsaw<hr>Hungary<br>Rome<hr>Hungary<br>Luxembourg<hr>Hungary<br>Brussels<hr>Hungary<br>Copenhagen<hr>Hungary<br>Helsinki<hr>Hungary<br>Paris<hr>Hungary<br>Bratislava<hr>Hungary<br>Ljubljana<hr>Hungary<br>Berlin<hr>Hungary<br>Athens<hr>Hungary<br>Dublin<hr>Hungary<br>Amsterdam<hr>Hungary<br>Lisbon<hr>Hungary<br>Madrid<hr>Hungary<br>Stockholm<hr>Hungary<br>London<hr>Hungary<br>Nicosia<hr>Hungary<br>Vilnius<hr>Hungary<br>Prague<hr>Hungary<br>Tallin<hr>Hungary<br>Budapest<hr>Hungary<br>Riga<hr>Hungary<br>Valetta<hr>Hungary<br>Vienna<hr>Hungary<br>Warsaw<hr>Latvia<br>Rome<hr>Latvia<br>Luxembourg<hr>Latvia<br>Brussels<hr>Latvia<br>Copenhagen<hr>Latvia<br>Helsinki<hr>Latvia<br>Paris<hr>Latvia<br>Bratislava<hr>Latvia<br>Ljubljana<hr>Latvia<br>Berlin<hr>Latvia<br>Athens<hr>Latvia<br>Dublin<hr>Latvia<br>Amsterdam<hr>Latvia<br>Lisbon<hr>Latvia<br>Madrid<hr>Latvia<br>Stockholm<hr>Latvia<br>London<hr>Latvia<br>Nicosia<hr>Latvia<br>Vilnius<hr>Latvia<br>Prague<hr>Latvia<br>Tallin<hr>Latvia<br>Budapest<hr>Latvia<br>Riga<hr>Latvia<br>Valetta<hr>Latvia<br>Vienna<hr>Latvia<br>Warsaw<hr>Malta<br>Rome<hr>Malta<br>Luxembourg<hr>Malta<br>Brussels<hr>Malta<br>Copenhagen<hr>Malta<br>Helsinki<hr>Malta<br>Paris<hr>Malta<br>Bratislava<hr>Malta<br>Ljubljana<hr>Malta<br>Berlin<hr>Malta<br>Athens<hr>Malta<br>Dublin<hr>Malta<br>Amsterdam<hr>Malta<br>Lisbon<hr>Malta<br>Madrid<hr>Malta<br>Stockholm<hr>Malta<br>London<hr>Malta<br>Nicosia<hr>Malta<br>Vilnius<hr>Malta<br>Prague<hr>Malta<br>Tallin<hr>Malta<br>Budapest<hr>Malta<br>Riga<hr>Malta<br>Valetta<hr>Malta<br>Vienna<hr>Malta<br>Warsaw<hr>Austria<br>Rome<hr>Austria<br>Luxembourg<hr>Austria<br>Brussels<hr>Austria<br>Copenhagen<hr>Austria<br>Helsinki<hr>Austria<br>Paris<hr>Austria<br>Bratislava<hr>Austria<br>Ljubljana<hr>Austria<br>Berlin<hr>Austria<br>Athens<hr>Austria<br>Dublin<hr>Austria<br>Amsterdam<hr>Austria<br>Lisbon<hr>Austria<br>Madrid<hr>Austria<br>Stockholm<hr>Austria<br>London<hr>Austria<br>Nicosia<hr>Austria<br>Vilnius<hr>Austria<br>Prague<hr>Austria<br>Tallin<hr>Austria<br>Budapest<hr>Austria<br>Riga<hr>Austria<br>Valetta<hr>Austria<br>Vienna<hr>Austria<br>Warsaw<hr>Poland<br>Rome<hr>Poland<br>Luxembourg<hr>Poland<br>Brussels<hr>Poland<br>Copenhagen<hr>Poland<br>Helsinki<hr>Poland<br>Paris<hr>Poland<br>Bratislava<hr>Poland<br>Ljubljana<hr>Poland<br>Berlin<hr>Poland<br>Athens<hr>Poland<br>Dublin<hr>Poland<br>Amsterdam<hr>Poland<br>Lisbon<hr>Poland<br>Madrid<hr>Poland<br>Stockholm<hr>Poland<br>London<hr>Poland<br>Nicosia<hr>Poland<br>Vilnius<hr>Poland<br>Prague<hr>Poland<br>Tallin<hr>Poland<br>Budapest<hr>Poland<br>Riga<hr>Poland<br>Valetta<hr>Poland<br>Vienna<hr>Poland<br>Warsaw<hr>