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<?php function convertPercentageToTime(string $duration, float $percentage): string { $videoDuration = $duration; $milliseconds = round($videoDuration * ($percentage / 100)); $hours = str_pad(floor($milliseconds / 3600000), 2, '0', STR_PAD_LEFT); $minutes = str_pad(floor(($milliseconds % 3600000) / 60000), 2, '0', STR_PAD_LEFT); $seconds = str_pad(floor((($milliseconds % 3600000) % 60000) / 1000), 2, '0', STR_PAD_LEFT); $millisecondsFormatted = str_pad($milliseconds % 1000, 2, '0', STR_PAD_LEFT); return $hours . ":" . $minutes . ":" . $seconds . ":" . $millisecondsFormatted; } $duration = "00:00:10:00"; $percentage = 16; $result = convertPercentageToTime(10000, $percentage); echo $result; // Выводит "00:06:00:00"