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

Example #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

DOMDocument::createProcessingInstruction() - Creates new PI node