DOMDocument::createProcessingInstruction

    (PHP 5, PHP 7, PHP 8)

    DOMDocument::createProcessingInstruction — Creates new PI node

    Description

    public DOMDocument::createProcessingInstruction(string $target, 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().

    Parameters

    target

    The target of the processing instruction.

    data

    The content of the processing instruction.

    Return Values

    The new DOMProcessingInstruction or false if an error occurred.

    Errors/Exceptions

    DOM_INVALID_CHARACTER_ERR

    Raised if target contains an invalid character.

    See Also

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    User Contributed Notes 1 note

    up
    3
    romain at supinfo dot com
    16 years ago
    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>
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