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# DOMProcessingInstruction->__construct()

(no version information, might be only in CVS)

DOMProcessingInstruction->__construct() -- Creates a new DOMProcessingInstruction object

## 说明

class DOMProcessingInstruction {
__construct ( string name [, string value] )
}

Creates a new DOMProcessingInstruction object. This object is read only. It may be appended to a document, but additional nodes may not be appended to this node until the node is associated with a document. To create a writeable node, use DOMDocument->createProcessingInstruction().

## 参数

name

  The tag name of the processing instruction.

value

  The value of the processing instruction.

## 范例

例子 1. Creating a new DOMProcessingInstruction

`<?php $dom = new DOMDocument('1.0', 'UTF-8'); $html = $dom->appendChild(new DOMElement('html')); $body = $html->appendChild(new DOMElement('body')); $pinode = new DOMProcessingInstruction('php', 'echo "Hello World"; '); $body->appendChild($pinode); echo $dom->saveXML(); ?>`

上例将输出：

    <?xml version="1.0" encoding="UTF-8"?>
    <html><body><?php echo "Hello World"; ?></body></html>

## 参见

DOMDocument->createProcessingInstruction()

后退 | 起点 | 前进
DOMNodelist->item() | 上一级 | DOMText->__construct()