DomDocumentType->system_id()

Returns the system id of document type ()

DomDocumentType {
  string system_id();
}

Returns the system id of the document type.

返回值

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

范例

例 501. 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();
?>

上例将输出:

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

Migrating to PHP 5

Use the systemId property of the DOMDocumentType object.