https://github.com/jblond/math-functions
A collection of Math functions written in PHP
https://github.com/jblond/math-functions
geodistance heatindex math php php-library php-math temperature windchill
Last synced: 8 days ago
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A collection of Math functions written in PHP
- Host: GitHub
- URL: https://github.com/jblond/math-functions
- Owner: JBlond
- License: mit
- Created: 2022-04-19T10:22:55.000Z (almost 4 years ago)
- Default Branch: main
- Last Pushed: 2024-10-16T13:04:11.000Z (over 1 year ago)
- Last Synced: 2025-06-17T20:45:56.347Z (8 months ago)
- Topics: geodistance, heatindex, math, php, php-library, php-math, temperature, windchill
- Language: PHP
- Homepage:
- Size: 43.9 KB
- Stars: 3
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Math functions
Install via composer
```php
composer require jblond/math-functions
```
## Circle
- radiusToArea(float $radius)
- areaToRadius(float $area)
- areaToCircumference(float $area)
- circumferenceToArea(float $c)
- radiusToCircumference(float $radius)
- circumferenceToRadius(float $c)
## Geo distance
Calculates the distance between two points. [Choose your function](geodistance.md).
- vincenty function
- Parameters
float $latitudeFrom Latitude of start point in [deg decimal]
float $longitudeFrom Longitude of start point in [deg decimal]
float $latitudeTo Latitude of target point in [deg decimal]
float $longitudeTo Longitude of target point in [deg decimal]
float $earthRadius Mean earth radius in [m]
OPTIONAL float|int Distance between points in [m] (same as earthRadius) default: 6371000 meters
- haversine function
- Parameters
float $latitudeFrom Latitude of start point in [deg decimal]
float $longitudeFrom Longitude of start point in [deg decimal]
float $latitudeTo Latitude of target point in [deg decimal]
float $longitudeTo Longitude of target point in [deg decimal]
- greatCircle
- Parameters
float $latitudeFrom Latitude of start point in [deg decimal]
float $longitudeFrom Longitude of start point in [deg decimal]
float $latitudeTo Latitude of target point in [deg decimal]
- float $longitudeTo Longitude of target point in [deg decimal]
- equirectangularApproximation
- Parameters
float $latitudeFrom Latitude of start point in [deg decimal]
float $longitudeFrom Longitude of start point in [deg decimal]
float $latitudeTo Latitude of target point in [deg decimal]
float $longitudeTo Longitude of target point in [deg decimal]
- cosineLaw
- Parameters
float $latitudeFrom Latitude of start point in [deg decimal]
float $longitudeFrom Longitude of start point in [deg decimal]
float $latitudeTo Latitude of target point in [deg decimal]
float $longitudeTo Longitude of target point in [deg decimal]
## Fibonacci
- Fibonacci
- fibonacciRecursion(int $number)
- fibonacciWithBinetFormula(int $number)
## Air
- AbsoluteHumidity(float $relativeHumidity, float $temperature, bool $temperatureInFahrenheit = false, bool $isRelativeHumidityInPercent = true)
- density(float $temperatureInCelsius, float $airPressure, float $relativeHumidityInPercent)
- dewPoint(float $temperatureInCelsius, float $humidityInPercent)
- heatIndex(float $temperatureInCelsius, float $humidityInPercent)
- heatIndexWarning(int $heatIndex)
- wetBulbTemperature(float $temperatureInCelsius, float $humidityInPercent)
- windchill(float $temperatureInCelsius, float $windSpeedInKmPerHour)
- iso7730(float $temperature, float $radiantTemperature, float $velocity, float $relativeHumidity, float $metabolicRate, float $clothingInsulation )
- pmvToWords(float $pmv, string $lang = 'en') See also [ISO-7730](ISO-7730.md)
## Psychrometric Chart
- saturationVaporPressurePa(float $T)
- humidityRatioFromRH(float $T, float $RH, float $pPa = 101325.0)
- enthalpy(float $T, float $w)
- rhIsoline(float $RH, float $pPa = 101325.0, float $Tmin = 0.0, float $Tmax = 40.0, float $dT = 1.0)
- enthalpyLine(float $hTarget, float $Tmin = 0.0, float $Tmax = 40.0, float $dT = 1.0)
- stateLineAtT(float $T, float $pPa = 101325.0)
## PsychrometricChartRenderer
- __construct(int $width = 1000, int $height = 700)
- setRanges(float $tMin, float $tMax, float $wMin, float $wMax)
- setPressurePa(float $p)
- drawAxesAndGrid(float $tStep = 5.0, float $wStep = 0.005)
- drawRhIsolines(array $rhValues = [10,20,30,40,50,60,70,80,90,100], float $tStep = 0.5)
- drawEnthalpyLines(array $hValues = [20, 30, 40, 50, 60, 70, 80], float $tStep = 0.5)
- plotPointFromTRH(float $T, float $RH, int $radius = 8, string $label = '')
- savePng(string $path)
## Sphere
- areaOfADisc(float $radius)
- circumference(float $radius)
- diameter(float $radius)
- surfaceArea(float $radius)
- volume(float $radius)
- heading(array $from, array $to)
## Temperature
- fahrenheitToCelsius(float $temperature)
- celsiusToFahrenheit(float $temperature)
- fahrenheitToKelvin(float $temperature)
- celsiusToKelvin(float $temperature)
- kelvinToCelsius(float $temperature)
## ISO‑52016 (Building Energy / Moisture Module)
- vaporPressureDeficitPa(float $T, float $RH)
- degreeOfSaturation(float $T, float $RH, float $pressurePa = 101325.0)
- specificHumidity(float $T, float $RH, float $pressurePa = 101325.0)
- latentMoistureLoad(float $airFlowM3s, float $T, float $RH, float $targetRH, float $pressurePa = 101325.0)
- operativeTemperature(float $airTemp, float $radiantTemp, float $airVelocity = 0.1)
- moistureBalanceStep(float $currentW, float $moistureSourceKgPerS, float $airMassFlowKgPerS, float $targetW, float $dtSeconds)
## MouldIndex
- step(float $M, float $T, float $RH, float $dtHours, string $material = 'medium')
- accumulat(earray $samples, float $dtHours = 1.0, string $material = 'medium')