   #PHP Manual XML parser functions xml_set_end_namespace_decl_handler
   xml_set_notation_decl_handler

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                      xml_set_external_entity_ref_handler

   (PHP 3>= 3.0.6, PHP 4 )
   xml_set_external_entity_ref_handler -- set up external entity
   reference handler

Description

   bool xml_set_external_entity_ref_handler ( resource parser, callback
   handler)

   Sets the external entity reference 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.

   The function named by handler must accept five parameters, and should
   return an integer value. If the value returned from the handler is
   FALSE (which it will be if no value is returned), the XML parser will
   stop parsing and xml_get_error_code() will return
   XML_ERROR_EXTERNAL_ENTITY_HANDLING. handler ( resource parser, string
   open_entity_names, string base, string system_id, string public_id)

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

   open_entity_names
          The second parameter, open_entity_names, is a space-separated
          list of the names of the entities that are open for the parse
          of this entity (including the name of the referenced entity).

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

   system_id
          The fourth parameter, system_id, is the system identifier as
          specified in the entity declaration.

   public_id
          The fifth parameter, public_id, is the public identifier as
          specified in the entity declaration, or an empty string if none
          was specified; the whitespace in the public identifier will
          have been normalized as required by the XML spec.

   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.
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