The DOMImplementation::createDocumentType() function is an inbuilt function in PHP which is used to create an empty DOMDocumentType object. Entity declarations and notations are not available.
Syntax:
DOMDocumentType DOMImplementation::createDocumentType ( string $qualifiedName = NULL, string $publicId = NULL, string $systemId = NULL )
Parameters:This function accepts three parameters as mentioned above and described below:
- $qualifiedName (Optional): It specifies the qualified name of the document type to create.
- $publicId (Optional): It specifies the qualified name of the external subset public identifier.
- $systemId (Optional): It specifies the external subset system identifier.
Return Value: This function returns DOMDocumentType node with its ownerDocument set to NULL.
Exceptions: This function throws DOM_NAMESPACE_ERR, if there is an error with the namespace, as determined by $qualifiedName.
Below given programs illustrate the DOMImplementation::createDocumentType() function in PHP:
Program 1:
<?php   // Creates an instance of the DOMImplementation class $imp = new DOMImplementation();   // Creates a DOMDocumentType instance $dtd = $imp->createDocumentType(   // Get the systemId echo $dtd->systemId; ?> |
Output:
http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd
Program 2:
<?php // Creates an instance of the DOMImplementation class $imp = new DOMImplementation(); Â Â // Creates a DOMDocumentType instance $dtd = $imp->createDocumentType('neveropen'); Â Â // Get the name echo $dtd->name; ?> |
Output:
neveropen
Reference: https://www.php.net/manual/en/domimplementation.createdocumenttype.php
