如何使用PHP开发记账系统的图表分析功能 - 提供图表分析功能的开发指南

// 获取记账系统的财务数据
$financialData = [
    ['month' => '2020-01', 'expense' => 100, 'income' => 150],
    ['month' => '2020-02', 'expense' => 80, 'income' => 200],
    ['month' => '2020-03', 'expense' => 120, 'income' => 180]
];

// 在HTML页面中添加Canvas元素
echo '<canvas id="myChart"></canvas>';

// 在HTML页面中引入Chart.js库
echo '<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>';

// 在HTML页面中编写JavaScript代码，初始化图表
echo '<script>';
echo 'var ctx = document.getElementById("myChart").getContext("2d");'; 
echo 'var myChart = new Chart(ctx, {';
echo '    type: "line",';
echo '    data: {';
echo '        labels: ["2020-01", "2020-02", "2020-03"],';
echo '        datasets: [{';
echo '            label: "Expense",';
echo '            data: ['.$financialData[0]['expense'].', '.$financialData[1]['expense'].', '.$financialData[2]['expense'].'],';
echo '            backgroundColor: "rgba(255, 99, 132, 0.2)",';
echo '            borderColor: "rgba(255, 99, 132, 1)",';
echo '            borderWidth: 1';
echo '        }, {';
echo '            label: "Income",';
echo '            data: ['.$financialData[0]['income'].', '.$financialData[1]['income'].', '.$financialData[2]['income'].'],';
echo '            backgroundColor: "rgba(54, 162, 235, 0.2)",';
echo '            borderColor: "rgba(54, 162, 235, 1)",';
echo '            borderWidth: 1';
echo '        }]';
echo '    },';
echo '    options: {';
echo '        scales: {';
echo '            y: {';
echo '                beginAtZero: true';
echo '            }';
echo '        }';
echo '    }';
echo '});';
echo '</script>';