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run code in 150+ php & hhvm versions
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<?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( $ceu as $country => $capital) echo "The capital of $country is $capital"; ?>
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
The capital of Italy is RomeThe capital of Luxembourg is LuxembourgThe capital of Belgium is BrusselsThe capital of Denmark is CopenhagenThe capital of Finland is HelsinkiThe capital of France is ParisThe capital of Slovakia is BratislavaThe capital of Slovenia is LjubljanaThe capital of Germany is BerlinThe capital of Greece is AthensThe capital of Ireland is DublinThe capital of Netherlands is AmsterdamThe capital of Portugal is LisbonThe capital of Spain is MadridThe capital of Sweden is StockholmThe capital of United Kingdom is LondonThe capital of Cyprus is NicosiaThe capital of Lithuania is VilniusThe capital of Czech Republic is PragueThe capital of Estonia is TallinThe capital of Hungary is BudapestThe capital of Latvia is RigaThe capital of Malta is ValettaThe capital of Austria is ViennaThe capital of Poland is Warsaw