PHP Manual
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# DomDocumentType->system_id

(no version information, might be only in CVS)

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.

例子 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(); ?>`

上例将输出：

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

后退 | 起点 | 前进
DomDocumentType->public_id | 上一级 | DomElement->get_attribute_node