✨ add PHPBench to run benchmarks

benchmark/parse-common.php

@@ -0,0 +1,78 @@
+<?php
+/**
+ * @created      27.04.2024
+ * @author       smiley <smiley@chillerlan.net>
+ * @copyright    2024 smiley
+ * @license      MIT
+ */
+declare(strict_types=1);
+
+namespace chillerlan\QRCodeBenchmark;
+
+use function array_column;
+use function array_key_first;
+use function array_keys;
+use function array_map;
+use function array_sum;
+use function explode;
+use function implode;
+use function intdiv;
+use function rsort;
+use function sprintf;
+use function str_repeat;
+use const SORT_NUMERIC;
+
+const BUILDDIR = __DIR__.'/../.build/phpbench';
+const FILE     = BUILDDIR.'/benchmark'; // without extension
+
+function parseVariants(array $variants):string{
+	$data = [];
+
+	foreach($variants as $variant){
+		[$version, $ecc, $mode] = explode(',', $variant['name']);
+
+		$data[(int)$version][$mode][$ecc] = parseVariantResults($variant['results']);
+	}
+
+	$v        = $data[array_key_first($data)];
+	$modeKeys = array_keys($v);
+	$eccKeys  = array_keys($v[$modeKeys[0]]);
+
+	$modeHeaders = array_map(fn($mode) => sprintf('<th colspan="4">%s</th>', $mode), $modeKeys);
+	$eccHeaders  = array_map(fn($ecc) => sprintf('<th>%s</th>', $ecc), $eccKeys);
+
+	$table = ['<table><thead>'];
+	$table[] = sprintf('<tr><th></th>%s</tr>', implode('', $modeHeaders));
+	$table[] = sprintf('<tr><th>Version</th>%s</tr>', str_repeat(implode('', $eccHeaders), count($modeKeys)));
+	$table[] = '</thead><tbody>';
+
+	foreach($data as $version => $modes){
+
+		$results = [];
+
+		foreach($modes as $eccLevels){
+			foreach($eccLevels as [$time_avg, $mem_peak]){
+				$results[] = sprintf('<td>%01.3f</td>', $time_avg);
+			}
+		}
+
+		$table[] = sprintf('<tr><td>%s</td>%s</tr>', $version, implode('', $results));
+
+	}
+
+	$table[] = '</tbody></table>';
+
+	return implode("\n", $table);
+}
+
+function parseVariantResults(array $results):array{
+	$iterations = count($results);
+	$mem_peak   = array_column($results, 'mem_peak');
+
+	rsort($mem_peak, SORT_NUMERIC);
+
+	return [
+		(array_sum(array_column($results, 'time_avg')) / $iterations / 1000),
+		intdiv($mem_peak[0], 1024),
+	];
+}