php 下载excel文件，单独设置工作表(sheet1,sheet2,sheet3....)

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本文介绍如何使用PHP创建并下载包含多个工作表（如sheet1, sheet2等）的Excel文件，告别单一工作表的限制。通过phpexcelbuilder库实现这一功能。" 119890417,7853721,深度学习模型优化策略总结,"['深度学习', '机器学习', '模型优化', '神经网络', '预训练模型']

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一直以来下载excel文件，都是简单使用修改header头的方式进行下载，好处自然是简单直接，缺点是，只能使用一个工作表，即一个sheet。

下面提供一个可生成多个工作表excel文件的code。

<?php
namespace worksheet;
class WorkSheet
{
    private $lines = array();
    public $sWorksheetTitle;
    public function __construct($sWorksheetTitle)
    {
        $this->setWorksheetTitle($sWorksheetTitle);
    }
    public function setWorksheetTitle ($title)
    {
        $title = preg_replace ("/[\\\¦:¦\/¦\?¦\*¦\[¦\]]/", "", $title);
        $title = substr ($title, 0, 31);
        $this->sWorksheetTitle = $title;
    }
    public function addRow ($array)
    {
        foreach($array as $v){
            $cells = "";
            foreach ($v as $k => $v1){
                $type = 'String';
                $v1 = htmlentities($v1, ENT_COMPAT, "UTF-8");
                $cells .= "<Cell><Data ss:Type=\"$type\">" . $v1 . "</Data></Cell>\n";

            }
            $this->lines[] = "<Row>\n" . $cells . "</Row>\n";
        }

    }
    public function printline()
    {
        foreach ($this->lines as $line)
        {
            echo $line;
        }
    }
}

class Excel
{
    public $worksheets = array();
    public function __construct($sWorksheetTitle)
    {
        $this->addsheet($sWorksheetTitle);
    }
    public function addsheet($title)
    {
        $this->worksheets[$title] = new WorkSheet($title);
    }
    public function generate ($filename = 'excel-export')
    {
        $filename = preg_replace('/[^aA-zZ0-9\_\-]/', '', $filename);
        header("Content-Type: application/force-download");
        header("Content-type:application/vnd.ms-excel");
        header("Content-Disposition:attachment; filename=".$filename.'-'.date("YmdHis").".xls");
        echo stripslashes("<?xml version=\"1.0\" encoding=\"UTF-8\"?\>\n<Workbook xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\" xmlns:x=\"urn:schemas-microsoft-com:office:excel\" xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\" xmlns:html=\"http://www.w3.org/TR/REC-html40\">");
        foreach ($this->worksheets as $worksheet)
        {
            echo "\n<Worksheet ss:Name=\"" . $worksheet->sWorksheetTitle . "\">\n<Table>\n";
            $worksheet->printline();
            echo "</Table>\n</Worksheet>\n";
        }
        echo "</Workbook>";
    }
}

$xls = new Excel('演员表'); //构造函数，参数为第一个sheet名称
$xls->addsheet('演员表');
$xls->worksheets['演员表']->addRow(array( array("李晨","马苏","杜淳") )); //添加一行，数据为1,2,3
$xls->addsheet('角色表');//新建一个sheet，参数为sheet名称
$xls->worksheets['角色表']->addRow(array( array("何东","权筝","何北") )); //添加一行，数据为3,2,1
$xls->generate('down');//下载excel，参数为文件名
?>