(no version information, might be only in CVS)
This function returns the public id of the document type.
The following example echos nothing.
例子 1. Retrieving the public id
<?phpinclude("example.inc");if (!$dom = domxml_open_mem($xmlstr)) { echo "Error while parsing the document\n"; exit;}$doctype = $dom->doctype();echo $doctype->public_id();?>