Fetch Data from Okta XML using PHP

Question

I am trying to get tags-wise values from the given XML, like the Location tags value using PHP/CakePHP 3.4, for that, I have tried the below ways.

1. file_get_contents with try 1, it returns the below response

2. simplexml_load_file

with this, it returns like below response

both ways are not working for my requirement.

below xml is from OKTA while i am creating application for SAML.

`

<?xml version="1.0" encoding="UTF-8"?>
<md:EntityDescriptor entityID="http://www.okta.com/exk76e6px5L1vxn4w5d7" xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata">
    <md:IDPSSODescriptor WantAuthnRequestsSigned="false" protocolSupportEnumeration="urn:oasis:names:tc:SAML:2.0:protocol">
        <md:KeyDescriptor use="signing">
            <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
                <ds:X509Data>
                    <ds:X509Certificate>other details comes here..</ds:X509Certificate>
                </ds:X509Data>
            </ds:KeyInfo>
        </md:KeyDescriptor>
        <md:NameIDFormat>urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress</md:NameIDFormat>
        <md:SingleSignOnService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Location="https://dev-57378204.okta.com/app/dev-57378204_saml20_1/e123456/sso/saml" />
        <md:SingleSignOnService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect" Location="https://dev-57378204.okta.com/app/dev-57378204_saml20_1/e123456/sso/saml" />
    </md:IDPSSODescriptor>
</md:EntityDescriptor>

`

any suggestion to get data from XML ?