libxml_set_external_entity_loader(3) [php man page]

LIBXML_SET_EXTERNAL_ENTITY_LOADER(3)					 1				      LIBXML_SET_EXTERNAL_ENTITY_LOADER(3)

libxml_set_external_entity_loader - Changes the default external entity loader

SYNOPSIS

       void libxml_set_external_entity_loader (callable  $resolver_function)

DESCRIPTION

	Changes the default external entity loader.

PARAMETERS

	      o $resolver_function
		-  A  callable	that takes three arguments. Two strings, a public id and system id, and a context (an array with four keys) as the
		third argument. This callback should return a resource, a string from which a resource can be opened, or NULL.

RETURN VALUES

	No value is returned.

EXAMPLES

       Example #1

	      libxml_set_external_entity_loader(3) example

	      <?php
	      $xml = <<<XML
	      <!DOCTYPE foo PUBLIC "-//FOO/BAR" "http://example.com/foobar">
	      <foo>bar</foo>
	      XML;

	      $dtd = <<<DTD
	      <!ELEMENT foo (#PCDATA)>
	      DTD;

	      libxml_set_external_entity_loader(
		  function ($public, $system, $context) use($dtd) {
		      var_dump($public);
		      var_dump($system);
		      var_dump($context);
		      $f = fopen("php://temp", "r+");
		      fwrite($f, $dtd);
		      rewind($f);
		      return $f;
		  }
	      );

	      $dd = new DOMDocument;
	      $r  = $dd->loadXML($xml);

	      var_dump($dd->validate());
	      ?>

	      The above example will output:

	      string(10) "-//FOO/BAR"
	      string(25) "http://example.com/foobar"
	      array(4) {
		  ["directory"]    => NULL
		  ["intSubName"]   => NULL
		  ["extSubURI"]    => NULL
		  ["extSubSystem"] => NULL
	      }
	      bool(true)

SEE ALSO

       libxml_disable_entity_loader(3).

PHP Documentation Group 										      LIBXML_SET_EXTERNAL_ENTITY_LOADER(3)

XML::LibXML::Dtd(3)					User Contributed Perl Documentation				       XML::LibXML::Dtd(3)

NAME

       XML::LibXML::Dtd - XML::LibXML DTD Handling

SYNOPSIS

	 use XML::LibXML;

	 $dtd = XML::LibXML::Dtd->new($public_id, $system_id);
	 $dtd = XML::LibXML::Dtd->parse_string($dtd_str);
	 $publicId = $dtd->getName();
	 $publicId = $dtd->publicId();
	 $systemId = $dtd->systemId();

DESCRIPTION

       This class holds a DTD. You may parse a DTD from either a string, or from an external SYSTEM identifier.

       No support is available as yet for parsing from a filehandle.

       XML::LibXML::Dtd is a sub-class of XML::LibXML::Node, so all the methods available to nodes (particularly toString()) are available to Dtd
       objects.

METHODS

       new
	     $dtd = XML::LibXML::Dtd->new($public_id, $system_id);

	   Parse a DTD from the system identifier, and return a DTD object that you can pass to $doc->is_valid() or $doc->validate().

	     my $dtd = XML::LibXML::Dtd->new(
				   "SOME // Public / ID / 1.0",
				   "test.dtd"
					     );
	      my $doc = XML::LibXML->new->parse_file("test.xml");
	      $doc->validate($dtd);

       parse_string
	     $dtd = XML::LibXML::Dtd->parse_string($dtd_str);

	   The same as new() above, except you can parse a DTD from a string. Note that parsing from string may fail if the DTD contains external
	   parametric-entity references with relative URLs.

       getName
	     $publicId = $dtd->getName();

	   Returns the name of DTD; i.e., the name immediately following the DOCTYPE keyword.

       publicId
	     $publicId = $dtd->publicId();

	   Returns the public identifier of the external subset.

       systemId
	     $systemId = $dtd->systemId();

	   Returns the system identifier of the external subset.

AUTHORS

       Matt Sergeant, Christian Glahn, Petr Pajas

VERSION

       2.0110

COPYRIGHT

       2001-2007, AxKit.com Ltd.

       2002-2006, Christian Glahn.

       2006-2009, Petr Pajas.

LICENSE

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.18.2							    2014-02-01						       XML::LibXML::Dtd(3)