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在php文件中执行Google Chart API(Javascript)

我在php中创建一个邮件,在wordpress插件中,并希望包含由谷歌图表api创建的图像.我尝试了以下方法:

<?php
$message.= <<<HTML

      <script>
    google.charts.load('current', {
        'packages': ['corechart']
    });
    google.charts.setOnLoadCallback(drawChart);

    function drawChart() {
        var data = google.visualization.arrayToDataTable([
            ['Year', 'Sales', 'Expenses'],
            ['2013', 1000, 400],
            ['2014', 1170, 460],
            ['2015', 660, 1120],
            ['2016', 1030, 540]
        ]);

        var options = {
            title: 'Company Performance',
            hAxis: {
                title: 'Year',
                titleTextStyle: {
                    color: '#333'
                }
            },
            vAxis: {
                minValue: 0
            }
        };

        var chart = new google.visualization.AreaChart(document.getElementById('chart_div'));
        chart.draw(data, options);
    }
    </script>

    <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>

    HTML;   

        $message.=<<<HTML

<h1> test message </h1>
    HTML;   

    $to = "test@test.com";
    $subject …

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javascript php wordpress google-visualization

Ann*_*lee

2016 08-03

11
推荐指数

4
解决办法

1419
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