# DOMDocument::createProcessingInstruction

(PHP 5, PHP 7, PHP 8)

DOMDocument::createProcessingInstruction — Creates new PI node

### 说明

public DOMDocument::createProcessingInstruction(string `$target`, string `$data` = ""): DOMProcessingInstruction|false

This function creates a new instance of class DOMProcessingInstruction. 此节点出现在文档中，除非是用诸如 DOMNode->appendChild() 等函数来将其插入。

### 参数

`target`

  The target of the processing instruction.

`data`

  The content of the processing instruction.

### 返回值

The new DOMProcessingInstruction or `false` if an error occurred.

### 错误／异常

`DOM_INVALID_CHARACTER_ERR`

  Raised if `target` contains an invalid character.

### 参见

- DOMNode::appendChild() - Adds new child at the end of the children
- DOMDocument::createAttribute() - Create new attribute
- DOMDocument::createAttributeNS() - Create new attribute node with an associated namespace
- DOMDocument::createCDATASection() - Create new cdata node
- DOMDocument::createComment() - Create new comment node
- DOMDocument::createDocumentFragment() - Create new document fragment
- DOMDocument::createElement() - Create new element node
- DOMDocument::createElementNS() - Create new element node with an associated namespace
- DOMDocument::createEntityReference() - Create new entity reference node
- DOMDocument::createTextNode() - Create new text node

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