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<?php function roundRating($rating, array $ratings) { if (in_array($rating, $ratings)) { return $rating; } foreach($ratings as $key => $value) { if ($value > $rating) { return $ratings[($key - 1)]; } } return FALSE; } $ratings = [0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0]; $rating = 3.8; if ($rate = roundRating($rating, $ratings)) echo sprintf('%.01f', $rate);

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38.85 ms | 402 KiB | 5 Q