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The DOMImplementation class

(PHP 5, PHP 7, PHP 8)

简介

The DOMImplementation class provides a number of methods for performing operations that are independent of any particular instance of the document object model.

类摘要

class DOMImplementation {
/* 方法 */
public createDocument(?string $namespace = null, string $qualifiedName = "", ?DOMDocumentType $doctype = null): DOMDocument|false
public createDocumentType(string $qualifiedName, string $publicId = "", string $systemId = ""): DOMDocumentType|false
public hasFeature(string $feature, string $version): bool
}

目录

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LANGE.LUDO
9 years ago
Ok got it working like a charm using "proxy pattern" with traits. The idea being declaring the common methods inside a "trait" in order for extended and registered Node Classes to have access even if not derived / child of the extended DOMNode…

Here a small snippet :
<?php
   
namespace my;

    trait
tNode
   
{    // We need the magic method __get in order to add properties such as DOMNode->parentElement
       
public function __get($name)
        {    if(
property_exists($this, $name)){return $this->$name;}
            if(
method_exists($this, $name)){return $this->$name();}
            throw new
\ErrorException('my\\Node property \''.(string) $name.'\' not found…', 42, E_USER_WARNING);
        }

       
// parentElement property definition
       
private function parentElement()
        {    if(
$this->parentNode === null){return null;}
            if(
$this->parentNode->nodeType === XML_ELEMENT_NODE){return $this->parentNode;}
            return
$this->parentNode->parentElement();
        }

       
// JavaScript equivalent
       
public function isEqualNode(\DOMNode $node){return $this->isSameNode($node);}
        public function
compareDocumentPosition(\DOMNode $otherNode)
        {    if(
$this->ownerDocument !== $otherNode->ownerDocument){return DOCUMENT_POSITION_DISCONNECTED;}
           
$c = strcmp($this->getNodePath(), $otherNode->getNodePath());
            if(
$c === 0){return 0;}
            else if(
$c < 0){return DOCUMENT_POSITION_FOLLOWING | ($c < -1 ? DOCUMENT_POSITION_CONTAINED_BY : 0);}
            return
DOCUMENT_POSITION_PRECEDING | ($c > 1 ? DOCUMENT_POSITION_CONTAINS : 0);
        }
        public function
contains(\DOMNode $otherNode){return ($this->compareDocumentPosition($otherNode) >= DOCUMENT_POSITION_CONTAINED_BY);}
    }

    class
Document extends \DomDocument
   
{    public function __construct($version=null, $encoding=null)
        {   
parent::__construct($version, $encoding);
           
$this->registerNodeClass('DOMNode', 'my\Node');
           
$this->registerNodeClass('DOMElement', 'my\Element');
           
$this->registerNodeClass('DOMDocument', 'my\Document');
           
/* [...] */
       
}
    }

    class
Element extends \DOMElement
   
{    use tNode;
       
/* [...] */
   
}

    class
Node extends \DOMNode
   
{    use tNode;
       
/* [...] */
   
}

?>
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