DomDocumentType::system_id

(PHP 4 >= 4.1.0)

DomDocumentType::system_id — Returns the system id of document type

说明

string DomDocumentType::system_id ( void )

Returns the system id of the document type.

返回值

Returns the system id of the DomDocumentType, as a string.

范例

Example #1 Retrieving the system id


<?php
include("example.inc");

if (!$dom = domxml_open_mem($xmlstr)) {
  echo "Error while parsing the document\n";
  exit;
}

$doctype = $dom->doctype();
echo $doctype->system_id();
?>

以上例程会输出：

/share/sgml/Norman_Walsh/db3xml10/db3xml10.dtd

Migrating to PHP 5

Use the systemId property of the DOMDocumentType object.