如何在PHP中进行疫情数据分析和可视化？

function get_html($url){
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    $output = curl_exec($ch);
    curl_close($ch);
    return $output;
}

$html = get_html('https://ncov.dxy.cn/ncovh5/view/pneumonia');

$pattern = '/<script id="getListByCountryTypeService2">(.*?)</script>/si';
preg_match($pattern, $html, $matches);
$matches_str = $matches[1];

$matches_str = str_replace('toArray(', '', $matches_str);
$matches_str = str_replace(')', '', $matches_str);
$data_array = JSON_decode($matches_str, true);

<script src="https://cdn.jsdelivr.net/npm/echarts/dist/echarts.min.js"></script>

$data = [];
foreach ($data_array as $item) {
    $data[] = [
        'name' => $item['provinceName'],
        'value' => $item['confirmedCount']
    ];
}
$json_data = json_encode($data);

<script type="text/javascript">
    var myChart = echarts.init(document.getElementById('map'));

    var option = {
        visualMap: {
            min: 0,
            max: 80000,
            left: 'left',
            top: 'bottom',
            text: ['高', '低'],
            calculable: true
        },
        toolbox: {
            show: true,
            orient: 'vertical',
            left: 'right',
            top: 'center',
            feature: {
                dataView: {readOnly: false},
                restore: {},
                saveAsImage: {}
            }
        },
        series: [
            {
                name: '确诊人数',
                type: 'map',
                mapType: 'china',
                roam: false,
                label: {
                    nORMal: {
                        show: true
                    },
                    emphasis: {
                        show: true
                    }
                },
                data:<?php echo $json_data; ?>
            }
        ]
    };

    myChart.setOption(option);
</script>