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

User Contributed Notes

romain at supinfo dot com 03-Feb-2009 11:57


A use exemple of this method :



Usefull for generating an XML linked with a XSLT !



<?php



// "Create" the document.

$xml = new DOMDocument( "1.0", "ISO-8859-15" );



//to have indented output, not just a line

$xml->preserveWhiteSpace = false;

$xml->formatOutput = true;



// ------------- Interresting part here ------------



//creating an xslt adding processing line

$xslt = $xml->createProcessingInstruction('xml-stylesheet', 'type="text/xsl" href="base.xsl"');



//adding it to the xml

$xml->appendChild($xslt);



// ----------- / Interresting part here -------------



//adding some elements

$root = $xml->createElement("list");

$node = $xml->createElement("contact", "John Doe");

$root-> appendChild($node);

$xml-> appendChild($root);



//creating the file

$xml-> save("output.xml");



?>



output.xml :



<?xml version="1.0" encoding="ISO-8859-15"?>

<?xml-stylesheet type="text/xsl" href="base.xsl"?> //the line has been created successfully

<list>

  <contact>John Doe</contact>

</list>