xml element exists

Posted on 16th Feb 2014 07:03 pm by admin

Code: [Select]<?xml version="1.0"?>
<Addresses>
<Address ID="1">
<Address2>101 MAIN ST</Address2>
<City>BIGTOWN</City>
<State>OH</State>
<Zip5>22222</Zip5>
<Zip4></Zip4></Address>
<Address ID="2">
<Address2>420 HIGH ST</Address2>
<City>MYTOWN</City>
<State>AK</State>
<Zip5>54321</Zip5>
<Zip4>2562</Zip4></Address>
</Addresses>
My code is reading the above xml, but if there was an error the xml will be different, for example:

Code: [Select]<?xml version="1.0"?>
<Addresses>
<Address ID="1">
<Error>
<Number>-2147219401</Number>
<Source>blah</Source>
<Description>Address Not Found. </Description>
<HelpFile></HelpFile>
<HelpContext>1000440</HelpContext>
</Error>
</Address>
<Address ID="2">
<Address2>420 HIGH ST</Address2>
<City>MYTOWN</City>
<State>AK</State>
<Zip5>54321</Zip5>
<Zip4>2562</Zip4></Address>
</Addresses>
Currently, I am accessing the elements like this:
$xml = new SimpleXMLElement($xml_txt);
$first_address = $xml->Address[0]->Address2;
$second_address = $xml->Address[1]->Address2;

This code doesn't work when the error xml is returned. There will always be 2 items in the xml. How can I tell which (if any) address has an 'error' node? Also, I need to know which of the 2 IDs has the error.

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