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# PHP xml_set_unparsed_entity_decl_handler() Function * * Complete PHP XML Reference Manual](#) * * * ## Definition and Usage The `xml_set_unparsed_entity_decl_handler()` function specifies the function to be called when the parser finds an unparsed entity in the XML document. If successful, this function returns TRUE. If it fails, it returns FALSE. ## Syntax xml_set_unparsed_entity_decl_handler(parser,handler) | Parameter | Description | | :--- | :--- | | parser | Required. Specifies the XML parser to use. | | handler | Specifies the function to be called when the parser finds an unparsed entity. | The function specified by the "handler" parameter must have six parameters: | Parameter | Description | | :--- | :--- | | parser | Required. Specifies a variable containing the XML parser calling the handler. | | name | Required. Specifies a variable containing the entity name. | | base | Required. Specifies a variable containing the base for resolving the system identifier (system_id) of the entity. Currently, this parameter is usually set to NULL. | | system_id | Required. Specifies a variable containing the system identifier of the entity. | | public_id | Required. Specifies a variable containing the public identifier of the entity. | | notation | Required. Specifies a variable containing the notation that identifies the entity data type. | * * * ## Tips and Notes **Note:** The handler parameter can also be an array containing an object reference and a method name. * * * ## Example <?php $parser=xml_parser_create(); function char($parser,$data) { echo $data; } function unparsed_ent_handler($parser,$entname, $base,$sysID,$pubID,$notname) { print "$entname
"; print "$sysID
"; print "$pubID
"; print "$notname
"; } xml_set_character_data_handler($parser,"char"); xml_set_unparsed_entity_decl_handler($parser, "unparsed_ent_handler"); $fp=fopen("test.xml","r"); while ($data=fread($fp,4096)) { xml_parse($parser,$data,feof($fp)) or die (sprintf("XML Error: %s at line %d", xml_error_string(xml_get_error_code($parser)), xml_get_current_line_number($parser))); } xml_parser_free($parser); ?> * * Complete PHP XML Reference Manual](#)