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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 $key=>$value) { echo "The capital of $key is $value".'<br/>'; }
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
The capital of Italy is Rome<br/>The capital of Luxembourg is Luxembourg<br/>The capital of Belgium is Brussels<br/>The capital of Denmark is Copenhagen<br/>The capital of Finland is Helsinki<br/>The capital of France is Paris<br/>The capital of Slovakia is Bratislava<br/>The capital of Slovenia is Ljubljana<br/>The capital of Germany is Berlin<br/>The capital of Greece is Athens<br/>The capital of Ireland is Dublin<br/>The capital of Netherlands is Amsterdam<br/>The capital of Portugal is Lisbon<br/>The capital of Spain is Madrid<br/>The capital of Sweden is Stockholm<br/>The capital of United Kingdom is London<br/>The capital of Cyprus is Nicosia<br/>The capital of Lithuania is Vilnius<br/>The capital of Czech Republic is Prague<br/>The capital of Estonia is Tallin<br/>The capital of Hungary is Budapest<br/>The capital of Latvia is Riga<br/>The capital of Malta is Valetta<br/>The capital of Austria is Vienna<br/>The capital of Poland is Warsaw<br/>
Output for hhvm-3.10.0

Process exited with code 153.