导出/下载表 HTML-PHP 到 Excel 文件

我有一个 HTML/PHP 表格，可以从 mySQL 中提取数据。请看这里link https://anakpanti.com/ab-cargo/controllers_searchshipment/。例如，请搜索此发货代码以获取表格内的结果：42-7278954.

之后，我想将结果导出到 Excel（您也可以看到那里的按钮）。

下面是我的视图中的表代码（我删除了一些列以缩短代码）：

$body = "";

$display =  "<table class='table_searchshipment' id='table_searchshipment' cellpadding='0' cellspacing='0' border='0'>";

            echo $display;
            $body .= $display;

            $display  = "<thead>
                        <tr>
                          <th>CN No.</th>
                          <th>Doc No.</th>
                        </tr>
                      </thead>";
            echo $display;
            $body .= $display;  

            while($row = mysqli_fetch_array($result)) {
                $CN_no= $row['CN_no'];
                $doc_no= $row['doc_no'];

                $display  = "<tr>
                        <td>".$CN_no."</td>
                        <td>".$doc_no."</td>
                      </tr>";
               echo $display;
               $body .= $display;
            }

            $display  = "</table>";
            echo $display;
            $body .= $display;
            $body = htmlspecialchars($body);

            echo '<form action = "setheader" method = "post">
                    <input type = "hidden" name = "body" value = "<?php echo $body ; ?>">
                <input type = "submit" name = "submit" Value = "Export to excel">
            </form>'; 

            if(isset($_POST['submit'])){ 
                    $body = $_POST['body'];
                    setHeader("export.xls");

                    echo $body;
                }

在控制器中，我创建了函数 setheader：

public function setheader($excel_file_name)//this function used to set the header variable
{   
    header("Content-type: application/octet-stream");//A MIME attachment with the content type "application/octet-stream" is a binary file.
    //Typically, it will be an application or a document that must be opened in an application, such as a spreadsheet or word processor. 
    header("Content-Disposition: attachment; filename=$excel_file_name");//with this extension of file name you tell what kind of file it is.
    header("Pragma: no-cache");//Prevent Caching
    header("Expires: 0");//Expires and 0 mean that the browser will not cache the page on your hard drive
   }

出现下载弹出窗口，但它只下载包含错误通知的“setheader”文件。请看一下here https://anakpanti.com/setheader.

Firstly,

该行需要更改为：

echo '<form action = "setheader" method = "post">
        <input type = "hidden" name = "body" value = "<?php echo $body ; ?>">
    <input type = "submit" name = "submit" Value = "Export to excel">
</form>';

to:

echo '<form action = "setheader" method = "post">
        <input type = "hidden" name = "body" value = "'.$body.'">
    <input type = "submit" name = "submit" Value = "Export to excel">
</form>';

第二，$body = htmlspecialchars($body);最有可能返回一个空字符串。

来自PHP Docs http://php.net/manual/en/function.htmlspecialchars.php

如果输入字符串包含无效的代码单元序列 给定编码将返回空字符串，除非 设置了 ENT_IGNORE 或 ENT_SUBSTITUTE 标志。

如果不知道数据库来自哪些数据，就很难进一步测试。

但你可以尝试：

$body = htmlspecialchars($body, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');看看它是否解决了这个问题。