# 游标读取

* 读取文件已支持 `windows` 系统，版本号大于等于 `1.3.4.1`；
* 扩展版本大于等于 `1.2.7`；
* PECL 安装时将会提示是否开启读取功能，请键入 `yes`；

## 编译

编译时需添加 `--enable-reader`

```bash
./configure --enable-reader
```

## 示例一

```php
$config   = ['path' => './tests'];
$excel    = new \Vtiful\Kernel\Excel($config);

// 导出测试文件
$filePath = $excel->fileName('tutorial.xlsx')
    ->header(['Item', 'Cost'])
    ->output();

// 读取测试文件
$excel->openFile('tutorial.xlsx')
    ->openSheet();

var_dump($excel->nextRow()); // ['Item', 'Cost']
var_dump($excel->nextRow()); // NULL
```

## 示例二

```php
$config   = ['path' => './tests'];
$excel    = new \Vtiful\Kernel\Excel($config);

// 导出测试文件
$filePath = $excel->fileName('tutorial.xlsx')
    ->header(['Item', 'Cost'])
    ->output();

// 读取测试文件
$excel->openFile('tutorial.xlsx')
    ->openSheet();

// 此处判断请使用【!==】运算符进行判断；
// 如果使用【!=】进行判断，出现空行时，返回空数组，将导致读取中断；
while (($row = $excel->nextRow()) !== NULL) {
    var_dump($row);
}
```


---

# 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/reader/read-file-cursor.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.