一、概述及安裝

The XMLReader extension is an XML Pull parser. The reader acts as a cursor going forward on the document stream and stopping at each node on the way.

It is important to note that internally, libxml uses the UTF-8 encoding and as such, the encoding of the retrieved contents will always be in UTF-8 encoding.

此擴展需要?libxml?PHP 擴展。這表示需要使用?--enable-libxml?，盡管這將隱式完成因為 libxml 是缺省開啟的。

The XMLReader extension was initially a PECL extension for PHP 5. It was later moved to the PHP source (bundled) as of PHP 5.1.0, and later enabled by default as of PHP 5.1.2.

此擴展默認為啟用,編譯時可通過下列選項禁用：?--disable-xmlreader

二、XMLReader類及其成員函數(shù)XMLReader::close?— Close the XMLReader inputXMLReader::expand?— Returns a copy of the current node as a DOM objectXMLReader::getAttribute?— Get the value of a named attributeXMLReader::getAttributeNo?— Get the value of an attribute by indexXMLReader::getAttributeNs?— Get the value of an attribute by localname and URIXMLReader::getParserProperty?— Indicates if specified property has been setXMLReader::isValid?— Indicates if the parsed document is validXMLReader::lookupNamespace?— Lookup namespace for a prefixXMLReader::moveToAttribute?— Move cursor to a named attributeXMLReader::moveToAttributeNo?— Move cursor to an attribute by indexXMLReader::moveToAttributeNs?— Move cursor to a named attributeXMLReader::moveToElement?— Position cursor on the parent Element of current AttributeXMLReader::moveToFirstAttribute?— Position cursor on the first AttributeXMLReader::moveToNextAttribute?— Position cursor on the next AttributeXMLReader::next?— Move cursor to next node skipping all subtreesXMLReader::open?— Set the URI containing the XML to parseXMLReader::read?— Move to next node in documentXMLReader::readInnerXML?— Retrieve XML from current nodeXMLReader::readOuterXML?— Retrieve XML from current node, including it selfXMLReader::readString?— Reads the contents of the current node as a stringXMLReader::setParserProperty?— Set parser optionsXMLReader::setRelaxNGSchema?— Set the filename or URI for a RelaxNG SchemaXMLReader::setRelaxNGSchemaSource?— Set the data containing a RelaxNG SchemaXMLReader::setSchema?— Validate document against XSDXMLReader::XML?— Set the data containing the XML to parse