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