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<?php function roundDownToHalf($number) { $remainder = ($number * 10) % 10; $half = $remainder >= 5 ? 0.5 : 0; $value = floatval(intval($number) + $half); return number_format($value, 1, '.', ''); } print roundDownToHalf(4.9) . "\n"; print roundDownToHalf(4.8) . "\n"; print roundDownToHalf(4.5) . "\n"; print roundDownToHalf(3.8) . "\n"; print roundDownToHalf(2.3) . "\n"; print roundDownToHalf(1.0) . "\n"; ?>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
4.5 4.5 4.5 3.5 2.0 1.0
preferences:
251.49 ms | 406 KiB | 358 Q