<?php
$array = [
"1990" => "США",
"1991" => "Мексика",
"1996" => "Нью-Йорк",
"1997" => "Прага",
"1999" => "Ялта",
"2000" => "Сочи",
"2001" => "Киев",
"2002" => "Москва",
"2003" => "Пекин",
"2004" => "США",
];
$current = "1990";
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