xml_set_external_entity_ref_handler

Definition and usage

xml_set_external_entity_ref_handler() function is used to specify the function to be called when the parser finds an external entity in an XML document.

Note: The handler parameter can also be an array containing object references and method names.

Example

Create an XML parser, set up a character data handler, set up an external entity reference handler, and parse the XML document:

 <?php
// Create XML parser
$parser = xml_parser_create ( ) ;

function char ( $parser , $data ) {
  echo $data ;
}

function ext_ent_handler ( $parser , $ent , $base , $sysID , $pubID ) {
  echo " $ent <br>" ;
  echo " $sysID <br>" ;
  echo " $pubID <br>" ;
}

// Set character data processing program
xml_set_character_data_handler ( $parser , "char" ) ;

// Set up external entity reference handler
xml_set_external_entity_ref_handler ( $parser , "ext_ent_handler" ) ;

$fp = fopen ( "note_entity.xml" , "r" ) ;

while ( $data = fread ( $fp , 4096 ) ) {
  // parse XML data
  xml_parse ( $parser , $data , feof ( $fp ) ) or
  die ( sprintf ( "XML error: %s on line %d" ,
  xml_error_string ( xml_get_error_code ( $parser ) ) ,
  xml_get_current_line_number ( $parser ) ) ) ;
}

xml_parser_free ( $parser ) ;
fclose ( $fp ) ;
?>

Run the instance

grammar

 xml_set_external_entity_ref_handler ( parser , handler )