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wells5609/php-math
==================

Math functions for PHP.

3834PHP

Since Aug 20Pushed 11y ago1 watchersCompare

[ Source](https://github.com/wells5609/PHP-Math)[ Packagist](https://packagist.org/packages/wells5609/php-math)[ RSS](/packages/wells5609-php-math/feed)WikiDiscussions master Synced 1mo ago

READMEChangelogDependenciesVersions (1)Used By (0)

PHP-Math
========

[](#php-math)

PHP math functions: mean(), median(), variance(), covariance(), correlation(), stddev(), pv(), npv(), and more.

\#Functions

\##`mean(array $values)`

**Parameters:**

- `Array $values` - Array of numeric values.

**Returns:** `String` Arithmetic average of the given values.

**Alias:** `avg()`

\##`median(array $values)`

**Parameters:**

- `Array $values` - Array of numeric values

**Returns:** `String` Median value of the given values, or null if it cannot be computed.

\##`sumxy(array $x_values, array $y_values)`

**Parameters:**

- `Array $x_values` - Array of numeric values of x.
- `Array $y_values` - Array of numeric values of y.

**Returns:** `String` Sum of the products of the values.

\##`sos(array $values, $values2 = null)`

**Parameters:**

- `Array $values` - Array of numeric values.
- `Null|Array|String $values2` - Optional - If null, simply sums the square of each array value. If given a scalar value, sums the squares of the difference between each array value and that given by $values2 (good for explained/regression SS). If given an array, sums the squares of the difference between betweeen each array value and the value in $values2 with matching key (good for residual SS).

**Returns:** `String` Sum of squares.

\##`variance(array $values, $is_sample = false)`

**Returns:** `String` Variance

\##`stddev(array $a, $is_sample = false)`

**Returns:** `String` Standard deviation

**Alias:** `stdev()`

\##`covariance(array $x_values, array $y_values)`

**Returns:** `String` Covariance

**Alias:** `covar()`

\##`correlation(array $x_values, array $y_values)`

**Returns:** `String` Correlation

**Alias:** `correl()`

\##`pv($cashflow, $rate, $period = 0)`

**Returns:** `String` Present value

\##`npv(array $cashflows, $rate)`

**Returns:** `String` Net present value

\##`weighted_avg(array $values, array $weights)`

**Returns:** `String` Weighted average

\##`pct($portion, $total)`

**Returns:** `String` Percent

\##`pct_change($current, $previous)`

**Returns:** `String` Percent change

\##`pct_change_array(array $values)`

**Returns:** `Array` Array values percent change

###  Health Score

23

—

LowBetter than 27% of packages

Maintenance20

Infrequent updates — may be unmaintained

Popularity15

Limited adoption so far

Community9

Small or concentrated contributor base

Maturity41

Maturing project, gaining track record

 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.

### Community

Maintainers

![](https://www.gravatar.com/avatar/2b5b7d38d1408fa7abf81c2650415faa6d135c0725b5a25c5e52aefeac03c455?d=identicon)[wells5609](/maintainers/wells5609)

---

Top Contributors

[![wells5609](https://avatars.githubusercontent.com/u/4088444?v=4)](https://github.com/wells5609 "wells5609 (16 commits)")

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