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# DomDocumentType->public_id

(no version information, might be only in CVS)

DomDocumentType->public_id -- Returns public id of document type

## Description

string DomDocumentType->public_id ( void )

This function returns the public id of the document type.

The following example echos nothing.

範例 1. Retrieving the public id

`<?php include("example.inc"); if (!$dom = domxml_open_mem($xmlstr)) { echo "Error while parsing the document\n"; exit; } $doctype = $dom->doctype(); echo $doctype->public_id(); ?>`

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