simplexml_load_string无法从URL加载xml

Question

I'm trying to extract XML data from a URL. It's not an XML file, but a response based on a request string.

$url = "http://eligibility.sc.egov.usda.gov/eligibility/eligibilityservice?eligibilityType=Property&requestString=<?xml version='1.0'?><Eligibility xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:noNamespaceSchemaLocation='/var/lib/tomcat5/webapps/eligibility/Eligibilitywsdl.xsd'><PropertyRequest StreetAddress1='".$street."' StreetAddress2='' StreetAddress3='' City='".$city."' State='".$state."' County='' Zip='".$zip."' Program='RBS'></PropertyRequest></Eligibility>";
$xml = simplexml_load_string($url); // requires allow_url_fopen to be on
$elg = (string)$xml->Property[Eligibility];

var_dump($xml);

The data I want looks like this:

<Eligibility>
    <Adjusted AnnualIncome="" TotalDeduction="" AdjustedIncome="" ElderlyDeduction="" YoungDeduction="">
    </Adjusted>
    <Section502Guaranted MaximumAdjusted="" Eligible="">
    </Section502Guaranted>
    <Section502Direct MaximumAdjusted="" Eligible="">
    </Section502Direct>
    <Property Eligibility="UnableToVerifyAddress" MapURL="http://rdgdwe.sc.egov.usda.gov/eligibilitymaps/index.jsp?app=RBSIELG&ADDRESS=392 Spruce east alton&STATE=IL&ZIP=62024"/>
    <ErrorResponse EngineId="" HostName="" MaxSeverity="" LogFile="" Class="" Module="" Severity="" Time="">
        <Message Code="" Type="" Text=""/>
    </ErrorResponse>
</Eligibility>

What I'm getting back looks like this:

bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) 

I have not clue why it's doing this. No errors are posting either.

Answer 1

Try this:

$url = "http://eligibility.sc.egov.usda.gov/eligibility/eligibilityservice?eligibilityType=Property&requestString=<?xml version='1.0'?><Eligibility xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:noNamespaceSchemaLocation='/var/lib/tomcat5/webapps/eligibility/Eligibilitywsdl.xsd'><PropertyRequest StreetAddress1='".$street."' StreetAddress2='' StreetAddress3='' City='".$city."' State='".$state."' County='' Zip='".$zip."' Program='RBS'></PropertyRequest></Eligibility>";
$url_arr = explode( 'requestString=', $url );
$xml = simplexml_load_string( $url_arr[ 1 ] ); // requires allow_url_fopen to be on
$elg = (string)$xml->Property[Eligibility];

var_dump($xml);

Basically, I just explode the $url you have given so that the well-formed xml will be isolated in $url_arr[ 1 ]