PHP code example of touilelhadj / biostat-php

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

touilelhadj / biostat-php example snippets

TouilElhadj\BiostatPhp\BiostatAnalysis;

$stats = new BiostatAnalysis();

// Two-by-two table: 45 exposed cases, 18 exposed non-cases,
//                   30 unexposed cases, 22 unexposed non-cases.
$chi = $stats->chi2Test2x2(45, 18, 30, 22);
echo "chi² = {$chi['chi2']}, p = {$chi['p']}\n";
//      chi² = 1.8027, p = 0.1794

$or = $stats->oddsRatio(45, 18, 30, 22);
echo "OR = {$or['or']} [{$or['ci_low']}, {$or['ci_high']}]\n";
//      OR = 1.83 [0.84, 3.98]

// Welch's t-test
$t = $stats->tTest(
    [10, 12, 11, 13, 14, 12, 11],
    [15, 17, 16, 18, 16, 17, 15]
);
echo "t = {$t['t']}, df = {$t['df']}, p = {$t['p']}\n";

// Logistic regression (one continuous covariate)
$y = [0,0,0,1,1,1,1,1,0,1,1,0,1,1,1,0,0,1,1,1];
$x = [1,1,2,2,3,3,4,4,1,2,3,4,5,5,4,2,1,3,4,5];
$lr = $stats->logisticRegression($y, $x);
echo "OR = {$lr['or']}, p = {$lr['p']}\n";

// Benjamini–Hochberg FDR adjustment
$adj = BiostatAnalysis::benjaminiHochberg([0.001, 0.01, 0.04, 0.2, 0.5]);
//   [0.005, 0.025, 0.067, 0.25, 0.5]

bash
composer 

bibtex
@software{touil_biostat_php_2026,
  author       = {TOUIL, Elhadj},
  title        = {biostat-php: a pure-PHP biostatistics library for
                  survey-based epidemiological studies},
  year         = {2026},
  version      = {1.0.0},
  url          = {https://github.com/Touil-Elhadj/biostat-php}
}