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[Utility & Helpers](/categories/utility) 4. / 5. jblond/math-functions ActiveLibrary[Utility & Helpers](/categories/utility) jblond/math-functions ===================== description 1.9.4(3mo ago)422MITPHPPHP >= 8.0 Since Apr 19Pushed 3mo ago1 watchersCompare [ Source](https://github.com/JBlond/math-functions)[ Packagist](https://packagist.org/packages/jblond/math-functions)[ RSS](/packages/jblond-math-functions/feed)WikiDiscussions main Synced 1mo ago READMEChangelog (10)Dependencies (3)Versions (17)Used By (0) Math functions ============== [](#math-functions) [![https://packagist.org/packages/jblond/math-functions](https://camo.githubusercontent.com/6ef23df0545b6611da9e5d72bc11d235f41877e6f095ee3e73d0ea3be65bd3d9/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f762f6a626c6f6e642f6d6174682d66756e6374696f6e733f6c6f676f3d7061636b6167697374266c6162656c3d5061636b6167697374)](https://camo.githubusercontent.com/6ef23df0545b6611da9e5d72bc11d235f41877e6f095ee3e73d0ea3be65bd3d9/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f762f6a626c6f6e642f6d6174682d66756e6374696f6e733f6c6f676f3d7061636b6167697374266c6162656c3d5061636b6167697374)[![https://packagist.org/packages/jblond/math-functions](https://camo.githubusercontent.com/26e4c98a6c43ae7c8f47d081926f12476f529815c54313073e4db4b122db1902/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f7068702d762f6a626c6f6e642f6d6174682d66756e6374696f6e733f6c6f676f3d706870266c6162656c3d504850)](https://camo.githubusercontent.com/26e4c98a6c43ae7c8f47d081926f12476f529815c54313073e4db4b122db1902/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f7068702d762f6a626c6f6e642f6d6174682d66756e6374696f6e733f6c6f676f3d706870266c6162656c3d504850)[![https://packagist.org/packages/jblond/math-functions](https://camo.githubusercontent.com/49627c17e68658551c9dc3fdf544501cd36326fc73c0ef31ec441f85fc4a111c/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f64742f6a626c6f6e642f6d6174682d66756e6374696f6e733f6c6f676f3d636f6d706f736572266c6162656c3d446f776e6c6f616473)](https://camo.githubusercontent.com/49627c17e68658551c9dc3fdf544501cd36326fc73c0ef31ec441f85fc4a111c/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f64742f6a626c6f6e642f6d6174682d66756e6374696f6e733f6c6f676f3d636f6d706f736572266c6162656c3d446f776e6c6f616473)[![https://packagist.org/packages/jblond/math-functions](https://camo.githubusercontent.com/53ae0f3d4aa6f735a0dd9b3995db428f5bf574978d99961521a42415d14a9d53/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f6c2f6a626c6f6e642f6d6174682d66756e6374696f6e733f6c6162656c3d4c6963656e7365)](https://camo.githubusercontent.com/53ae0f3d4aa6f735a0dd9b3995db428f5bf574978d99961521a42415d14a9d53/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f6c2f6a626c6f6e642f6d6174682d66756e6374696f6e733f6c6162656c3d4c6963656e7365) Install via composer ``` composer require jblond/math-functions ``` Circle ------ [](#circle) - radiusToArea(float $radius) - areaToRadius(float $area) - areaToCircumference(float $area) - circumferenceToArea(float $c) - radiusToCircumference(float $radius) - circumferenceToRadius(float $c) Geo distance ------------ [](#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) - Fibonacci - fibonacciRecursion(int $number) - fibonacciWithBinetFormula(int $number) Air --- [](#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 ------------------- [](#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 -------------------------- [](#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 ------ [](#sphere) - areaOfADisc(float $radius) - circumference(float $radius) - diameter(float $radius) - surfaceArea(float $radius) - volume(float $radius) - heading(array $from, array $to) Temperature ----------- [](#temperature) - fahrenheitToCelsius(float $temperature) - celsiusToFahrenheit(float $temperature) - fahrenheitToKelvin(float $temperature) - celsiusToKelvin(float $temperature) - kelvinToCelsius(float $temperature) ISO‑52016 (Building Energy / Moisture Module) --------------------------------------------- [](#iso52016-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 ---------- [](#mouldindex) - step(float $M, float $T, float $RH, float $dtHours, string $material = 'medium') - accumulat(earray $samples, float $dtHours = 1.0, string $material = 'medium') ### Health Score 43 — FairBetter than 91% of packages Maintenance80 Actively maintained with recent releases Popularity11 Limited adoption so far Community7 Small or concentrated contributor base Maturity62 Established project with proven stability Bus Factor1 Top contributor holds 100% of commits — single point of failure How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** — Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Every ~92 days Recently: every ~29 days Total 16 Last Release 105d ago PHP version history (2 changes)1.0.0PHP >= 7.4 1.7.1PHP >= 8.0 ### Community Maintainers ![](https://www.gravatar.com/avatar/e29eedf6a63367a7c0841f304be766cb6745cd798ff066a00d342ada47e507b2?d=identicon)[JBlond](/maintainers/JBlond) --- Top Contributors [![JBlond](https://avatars.githubusercontent.com/u/2391810?v=4)](https://github.com/JBlond "JBlond (117 commits)") --- Tags cosine-lawenthalpyequirectangular-approximationgeodistancehaversinehaversine-formulaheatindexiso-7730iso7730mathmoistairenthalpymoldindexphpphp-libraryphp-mathtemperaturevincentyvincenty-formulawindchill ### Code Quality TestsPHPUnit Code StylePHP\_CodeSniffer ### Embed Badge ![Health badge](/badges/jblond-math-functions/health.svg) ``` [![Health](https://phpackages.com/badges/jblond-math-functions/health.svg)](https://phpackages.com/packages/jblond-math-functions) ``` PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)