php 通过html-table形式，完成excel下载

/**
 * @param $datas  具体数据
 * @param $titles 列名
 * @param $filename 文件名
 * @param $extraMessage 额外信息
 */
public static function createExcel($datas, $titles, $filename, $extraMessage = '')
{
    $str = "<html xmlns:o=\"urn:schemas-microsoft-com:office:office\"\r\nxmlns:x=\"urn:schemas-microsoft-com:office:excel\"\r\nxmlns=\"http://www.w3.org/TR/REC-html40\">\r\n<head>\r\n<meta http-equiv=Content-Type content=\"text/html; charset=utf-8\">\r\n</head>\r\n<body>";
    $str .= "<table border=1>";
    //表头
    $str .= "<tr>";
    foreach ($titles as $title) {
        $str .= "<td style='width: 60px;'>{$title}</tdw>";
    }
    $str .= "</tr>\n";
    //具体数据
    foreach ($datas as $key => $rt) {
        $str .= "<tr>";
        foreach ($rt as $k => $v) {
            $str .= "<td>{$v}</td>";
        }
        $str .= "</tr>\n";
    }
    //额外信息
    if (!empty($extraMessage)) {
        $str .= "<tr style='height:50px;border-style:none;'><th border=\"0\" style='height:60px;width:270px;font-size:22px;' colspan='19' >{$extraMessage}</th></tr>";
    }
    $str .= "</table></body></html>";
    header("Content-Type: application/vnd.ms-excel; name='excel'");
    header("Content-type: application/octet-stream");
    header("Content-Disposition: attachment; filename=" . $filename);
    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
    header("Content-Type:application/download");;
    header("Pragma: no-cache");
    header("Expires: 0");
    exit($str);
}
最下方本次导出合计为额外信息
php 通过html-table形式，完成excel下载

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