PHPを使用して簡単なデータ分析機能を実装する方法

$data = array(
    array('name' => 'John', 'age' => 25, 'gender' => 'male'),
    array('name' => 'Jane', 'age' => 35, 'gender' => 'female'),
    array('name' => 'Tom', 'age' => 30, 'gender' => 'male'),
    array('name' => 'Lisa', 'age' => 28, 'gender' => 'female'),
    // more data...
);

$sum = 0;
$count = count($data);
$maxAge = 0;
$minAge = 999;

foreach ($data as $item) {
    $sum += $item['age'];
    if ($item['age'] > $maxAge) {
        $maxAge = $item['age'];
    }
    if ($item['age'] < $minAge) {
        $minAge = $item['age'];
    }
}

$average = $sum / $count;

echo "数据总数：" . $count . "
";
echo "平均年龄：" . $average . "
";
echo "最大年龄：" . $maxAge . "
";
echo "最小年龄：" . $minAge . "
";

composer require jpgraph/jpgraph

require_once ('jpgraph/src/jpgraph.php');
require_once ('jpgraph/src/jpgraph_bar.php');

$ageCounts = array();
foreach ($data as $item) {
    $age = $item['age'];
    if (!isset($ageCounts[$age])) {
        $ageCounts[$age] = 1;
    } else {
        $ageCounts[$age]++;
    }
}

$graph = new Graph(400, 300);
$graph->SetScale("textlin");

$barplot = new BarPlot(array_values($ageCounts));

$graph->Add($barplot);

$graph->Stroke();