International PHP Conference Berlin 2025

The DOMProcessingInstruction class

(PHP 5, PHP 7, PHP 8)

Introduction

This represents a processing instruction (PI) node. These are meant to indicate data areas meant for processing by specific applications.

Class synopsis

class DOMProcessingInstruction extends DOMNode {
/* Inherited constants */
/* Properties */
public readonly string $target;
public string $data;
/* Inherited properties */
public readonly string $nodeName;
public readonly int $nodeType;
public readonly ?DOMNode $parentNode;
public readonly ?DOMElement $parentElement;
public readonly DOMNodeList $childNodes;
public readonly ?DOMNode $firstChild;
public readonly ?DOMNode $lastChild;
public readonly ?DOMNode $previousSibling;
public readonly ?DOMNode $nextSibling;
public readonly ?DOMNamedNodeMap $attributes;
public readonly bool $isConnected;
public readonly ?DOMDocument $ownerDocument;
public readonly ?string $namespaceURI;
public string $prefix;
public readonly ?string $localName;
public readonly ?string $baseURI;
/* Methods */
public __construct(string $name, string $value = "")
/* Inherited methods */
public DOMNode::C14N(
    bool $exclusive = false,
    bool $withComments = false,
    ?array $xpath = null,
    ?array $nsPrefixes = null
): string|false
public DOMNode::C14NFile(
    string $uri,
    bool $exclusive = false,
    bool $withComments = false,
    ?array $xpath = null,
    ?array $nsPrefixes = null
): int|false
public DOMNode::isEqualNode(?DOMNode $otherNode): bool
public DOMNode::isSameNode(DOMNode $otherNode): bool
public DOMNode::isSupported(string $feature, string $version): bool
}

Properties

target
A string representing to what application the data is intended for.
data
Application-specific data.

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