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# xml_set_unparsed_entity_decl_handler

(PHP 3>= 3.0.6, PHP 4 , PHP 5)

xml_set_unparsed_entity_decl_handler -- Set up unparsed entity declaration handler

## Description

bool xml_set_unparsed_entity_decl_handler ( resource parser, callback handler )

Sets the unparsed entity 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.

This handler will be called if the XML parser encounters an external entity declaration with an NDATA declaration, like the following:

    <!ENTITY <parameter>name</parameter> {<parameter>publicId</parameter> | <parameter>systemId</parameter>}
            NDATA <parameter>notationName</parameter>

See section 4.2.2 of the XML 1.0 spec for the definition of notation declared external entities.

The function named by handler must accept six parameters: handler ( resource parser, string entity_name, string base, string system_id, string public_id, string notation_name )

parser

  The first parameter, parser, is a reference to the XML parser calling the handler.

entity_name

  The name of the entity that is about to be defined.

base

  This is the base for resolving the system identifier (systemId) of the external entity. Currently this parameter will always be set to an empty string.

system_id

  System identifier for the external entity.

public_id

  Public identifier for the external entity.

notation_name

  Name of the notation of this entity (see xml_set_notation_decl_handler()).

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.

> 注: 除了函數名稱，也提供一個包含物件參考的陣列和一個方法名稱。

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