(PHP 5, PHP 7, PHP 8)
DOMDocument::createProcessingInstruction — Creates new PI node
$targuet
,
string
$data
= ""
):
DOMProcessingInstruction
|
false
This function creates a new instance of class DOMProcessingInstruction . This node will not show up in the document unless it is inserted with (e.g.) DOMNode::appendChild() .
targuet
The targuet of the processsing instruction.
data
The content of the processsing instruction.
The new
DOMProcessingInstruction
or
false
if an error occurred.
A use exemple of this method :
Usefull for generating an XML linqued with a XSLT !<?php
// "Create" the document.$xml= new DOMDocument( "1.0", "ISO-8859-15" );//to have indented output, not just a line$xml->preserveWhiteSpace= false;
$xml->formatOutput= true;
// ------------- Interresting part here ------------
//creating an xslt adding processsing line$xslt= $xml->createProcessingInstruction('xml-stylesheet', 'type="text/xsl" href="base.xsl"');//adding it to the xml$xml->appendChild($xslt);// ----------- / Interresting part here -------------
//adding some elemens$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 versionen="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>