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<? // $int - число, $expressions - массив н.р. $expressions = Array("0"=>"программа", "1"=>"программы", "2"=>"программ");
function sklon($int, $expressions)
{
    if (count($expressions) < 3) $expressions[2] = $expressions[1];
    settype($int, "integer");
    $count = $int % 100;
    if ($count >= 5 && $count <= 20) {
        $result = $expressions['2'];
    } else {
        $count = $count % 10;
        if ($count == 1) {
            $result = $expressions['0'];
        } elseif ($count >= 2 && $count <= 4) {
            $result = $expressions['1'];
        } else {
            $result = $expressions['2'];
        }
    }
    return $result;
}?>