PHP 8.4.2 Released!

    The DOMComment class

    (PHP 5, PHP 7, PHP 8)

    Introduction

    Represents comment nodes, characters delimited by <!-- and -->.

    Class synopsis

    class DOMComment extends DOMCharacterData {
    /* Inherited constants */
    public const int DOMNode::DOCUMENT_POSITION_DISCONNECTED = 0x1;
    public const int DOMNode::DOCUMENT_POSITION_PRECEDING = 0x2;
    public const int DOMNode::DOCUMENT_POSITION_FOLLOWING = 0x4;
    public const int DOMNode::DOCUMENT_POSITION_CONTAINS = 0x8;
    public const int DOMNode::DOCUMENT_POSITION_CONTAINED_BY = 0x10;
    public const int DOMNode::DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC = 0x20;
    /* Inherited properties */
    public string $data;
    public readonly int $length;
    public readonly ?DOMElement $previousElementSibling;
    public readonly ?DOMElement $nextElementSibling;
    public readonly string $nodeName;
    public ?string $nodeValue;
    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;
    public string $textContent;
    /* Methods */
    public __construct(string $data = "")
    /* Inherited methods */
    public DOMCharacterData::after(DOMNode|string ...$nodes): void
    public DOMCharacterData::appendData(string $data): true
    public DOMCharacterData::before(DOMNode|string ...$nodes): void
    public DOMCharacterData::deleteData(int $offset, int $count): bool
    public DOMCharacterData::insertData(int $offset, string $data): bool
    public DOMCharacterData::remove(): void
    public DOMCharacterData::replaceData(int $offset, int $count, string $data): bool
    public DOMCharacterData::replaceWith(DOMNode|string ...$nodes): void
    public DOMCharacterData::substringData(int $offset, int $count): string|false
    public DOMNode::appendChild(DOMNode $node): DOMNode|false
    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::cloneNode(bool $deep = false): DOMNode|false
    public DOMNode::compareDocumentPosition(DOMNode $other): int
    public DOMNode::contains(DOMNode|DOMNameSpaceNode|null $other): bool
    public DOMNode::getLineNo(): int
    public DOMNode::getNodePath(): ?string
    public DOMNode::getRootNode(?array $options = null): DOMNode
    public DOMNode::hasAttributes(): bool
    public DOMNode::hasChildNodes(): bool
    public DOMNode::insertBefore(DOMNode $node, ?DOMNode $child = null): DOMNode|false
    public DOMNode::isDefaultNamespace(string $namespace): bool
    public DOMNode::isEqualNode(?DOMNode $otherNode): bool
    public DOMNode::isSameNode(DOMNode $otherNode): bool
    public DOMNode::isSupported(string $feature, string $version): bool
    public DOMNode::lookupNamespaceURI(?string $prefix): ?string
    public DOMNode::lookupPrefix(string $namespace): ?string
    public DOMNode::normalize(): void
    public DOMNode::removeChild(DOMNode $child): DOMNode|false
    public DOMNode::replaceChild(DOMNode $node, DOMNode $child): DOMNode|false
    public DOMNode::__sleep(): array
    public DOMNode::__wakeup(): void
    }

    See Also

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    User Contributed Notes 1 note

    up
    -1
    npelov at croler dot net
    3 years ago
    Note that textContent property of a comment is not entity decoded, it is decoded in DOMElement::textContent :

    <?php

    $xml     = new DOMDocument();
    $xml->loadXML('<?xml version="1.0" encoding="utf-8"?>
    <configuration version="2">
    <!-- test &#45;&#45;&gt; -->
    test &#45;&#45;&gt;
    </configuration>'
    );
    $xpath = new DOMXPath($xml);
    $comments = $xpath->query('//comment()');
    $elements = $xpath->query('//configuration');

    echo     $comments[0]->textContent;
    // result: test &#45;&#45;&gt;

    echo $elements[0]->textContent;
    // result: test -->

    ?>
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