# xml_set_notation_decl_handler

(PHP 4, PHP 5)

xml_set_notation_decl_handler — Set up notation declaration handler

### Description

bool xml_set_notation_decl_handler ( resource `$parser` , callback `$handler` )

Sets the notation declaration handler function for the XML parser `parser` .

A notation declaration is part of the document's DTD and has the following format:

    <!NOTATION <parameter>name</parameter>
    { <parameter>systemId</parameter> | <parameter>publicId</parameter>?>

See » section 4.7 of the XML 1.0 spec for the definition of notation declarations.

### Parameters

`parser`

`handler`

  `handler` is a string containing the name of a function that must exist when xml_parse() is called for `parser` .

  The function named by `handler` must accept five parameters:

  handler ( resource `$parser` , string `$notation_name` , string `$base` , string `$system_id` , string `$public_id` )
  `parser`
    The first parameter, parser, is a reference to the XML parser calling the handler.
  `notation_name`
    This is the notation's `name` , as per the notation format described above.
  `base`
    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_id`
    System identifier of the external notation declaration.
  `public_id`
    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.

  > Note: Instead of a function name, an array containing an object reference and a method name can also be supplied.

### Return Values

Returns `TRUE` on success or `FALSE` on failure.