# XMLReader::getAttributeNo

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

XMLReader::getAttributeNo — Get the value of an attribute by index

### 说明

public XMLReader::getAttributeNo(int `$index`): ?string

Returns the value of an attribute based on its position or an empty string if attribute does not exist or not positioned on an element node.

### 参数

`index`

  The position of the attribute.

### 返回值

The value of the attribute, or `null` if no attribute exists at `index` or is not positioned on the element.

### 参见

- XMLReader::getAttribute() - Get the value of a named attribute
- XMLReader::getAttributeNs() - Get the value of an attribute by localname and URI

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