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<?php |
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/** |
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* contains some helpful mathematics models |
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* |
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* @package BlueData |
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* @subpackage Data |
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* @author Michał Adamiak <[email protected]> |
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* @copyright bluetree-service |
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*/ |
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namespace BlueData\Calculation; |
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class Math |
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{ |
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/** |
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* Calculates percent difference between two numbers |
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* |
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* @param int|float $from |
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* @param int|float $into |
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* @return int|float |
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*/ |
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public static function getPercentDifference($from, $into) |
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{ |
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if ($into === 0) { |
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return 0; |
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} |
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return 100 - (($into / $from) *100); |
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} |
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/** |
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* Calculate which percent is one number of other |
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* |
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* @param float $part value that is percent of other value |
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* @param float $all value to check percent |
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* @return integer|float |
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*/ |
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public static function numberToPercent($part, $all) |
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{ |
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if ($all === 0) { |
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return 0; |
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} |
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return ($part / $all) *100; |
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} |
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/** |
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* Calculate percent form value |
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* |
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* @param float $part value that will be percent of other value |
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* @param float $all value from calculate percent |
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* @return integer|float |
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*/ |
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public static function percent($part, $all) |
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{ |
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if ($all === 0) { |
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return 0; |
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} |
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return ($part / 100) *$all; |
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} |
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/** |
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* Estimate time to end, by given current usage value and max value |
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* |
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* @param float $edition maximum number of value |
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* @param float $used how many was used |
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* @param integer $start start time in unix timestamp |
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* @param integer $timeNow current unix timestamp |
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* @return integer estimated end time in unix timestamp |
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*/ |
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public static function end($edition, $used, $start, $timeNow) |
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{ |
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if (!$used) { |
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return 0; |
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} |
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$end = $edition / ($used / ($timeNow - $start)); |
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$end += $timeNow; |
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return $end; |
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} |
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/** |
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* @param array $data |
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* @return float|int |
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*/ |
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public static function median(array $data) |
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{ |
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sort($data); |
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$valuesCount = count($data); |
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$key = ($valuesCount -1 ) / 2; |
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$median = $data[$key]; |
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if (!($valuesCount % 2)) { |
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$median = ($median + $data[$key +1]) / 2; |
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} |
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return $median; |
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} |
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/** |
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* @param array $data |
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* @return float|int |
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*/ |
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public static function average(array $data) |
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{ |
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return array_sum($data) / count($data); |
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} |
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} |
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bluetree-service /
data
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