DOMProcessingInstruction::__construct

(PHP 5, PHP 7)

DOMProcessingInstruction::__construct — Creates a new DOMProcessingInstruction object

说明

public 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

示例 #1 Creating a new DOMProcessingInstruction object

<?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(); 

?>

以上例程会输出：

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

参见