php处理复杂xml数据示例

<?php $xml = <<< XML <?xml version= "1.0" encoding= "utf-8" ?> <epp xmlns= "urn:ietf:params:xml:ns:epp-1.0" xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation= "urn:ietf:params:xml:ns:epp-1.0 epp-1.0.xsd" >   <response>    <result code= "1000" >     <msg>Command completed successfully</msg>    </result>    <resData>     <domain:chkData xmlns:domain= "urn:ietf:params:xml:ns:domain-1.0" xsi:schemaLocation= "urn:ietf:params:xml:ns:domain-1.0 domain-1.0.xsd" >      <domain:cd>       <domain:name avail= "0" >qq.com</domain:name>       <domain:reason>Domain exists</domain:reason>      </domain:cd>      <domain:cd>       <domain:name avail= "1" >baidu.com</domain:name>       <domain:reason>Domain exists</domain:reason>      </domain:cd>     </domain:chkData>    </resData>    <trID>     <clTRID>REQ-001-0000000074</clTRID>     <svTRID>649334436-1440642163169</svTRID>    </trID>   </response> </epp> XML; $x = simplexml_load_string( $xml ); echo intval ( $x ->response->result[ "code" ]), "\n" ; echo strval ( $x ->response->result->msg), "\n" ; $ns = $x ->response->resData->getNamespaces(true); $cds = $x ->response->resData->children( $ns [ "domain" ])->chkData->cd; foreach ( $cds as $key => $value ) {    echo intval ( $value ->name->attributes()[ "avail" ]), strval ( $value ->name), strval ( $value ->reason), "\n" ;