Sets the notation declaration handler function for the XML parser parser. handler is a string containing the name of a function that must exist when xml_parse() is called for parser.
A notation declaration is part of the document's DTD and has the following format:
<!NOTATION
name {system_id |
public_id}> |
The function named by handler must accept
five parameters:
handler ( resource parser, string notation_name, string base, string system_id, string public_id)
The first parameter, parser, is a reference to the XML parser calling the handler.
This is the notation's name, as per the notation format described above.
This is the base for resolving the system identifier (system_id) of the notation declaration. Currently this parameter will always be set to an empty string.
System identifier of the external notation declaration.
Public identifier of the external notation declaration.
If a handler function is set to an empty string, or FALSE, the handler in question is disabled.
TRUE is returned if the handler is set up, FALSE if parser is not a parser.
Note: Instead of a function name, an array containing an object reference and a method name can also be supplied.