# 切换工作表

## **函数原型**

```php
checkoutSheet(string $sheetName): self

activateSheet(string $sheetName): bool
```

> `checkoutSheet` 用于切换当前写入工作表；`activateSheet` 用于设置打开 xlsx 时 Excel 默认展示的工作表，仅影响视图，不改变写入目标。

## **实例**

```php
$config = [
  'path' => './tests'
];

$excel      = new \Vtiful\Kernel\Excel($config);
$fileObject = $excel->fileName("tutorial01.xlsx");

$fileObject->header(['name', 'age'])
    ->data([
    ['viest', 21],
    ['viest', 22],
    ['viest', 23],
    ]);

// 添加工作表，并插入数据
$fileObject->addSheet('twoSheet')
    ->header(['name', 'age'])
    ->data([['vikin', 22]]);

// 切换回默认工作表，并追加数据
$fileObject->checkoutSheet('Sheet1')
    ->data([['sheet1']]);

$filePath = $fileObject->output();
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://xlswriter-docs.viest.me/zhong-wen-jian-ti/worksheet/switch.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.