Using XML to PHP parser with this file

programming
1

Hi!
I was trying to use the tutorial and i understand it but i don’t know how to make it functional in my situation.

I have a XML file with the currencies from the European Central Bank and i would like to know how to to retrieve the Rate from a certain Currency. Here is the xml code:

<?xml version=“1.0” encoding=“UTF-8”?>
<gesmes:Envelope xmlns:gesmes=“http://www.gesmes.org/xml/2002-08-01” xmlns=“http://www.ecb.int/vocabulary/2002-08-01/eurofxref”>
<gesmes:subject>Reference rates</gesmes:subject>
<gesmes:Sender>
<gesmes:name>European Central Bank</gesmes:name>
</gesmes:Sender>
<Cube>
<Cube time=“2006-07-24”>
<Cube currency=“USD” rate=“1.2633”/>
<Cube currency=“JPY” rate=“147.32”/>
<Cube currency=“CYP” rate=“0.5750”/>
<Cube currency=“CZK” rate=“28.435”/>
<Cube currency=“DKK” rate=“7.4604”/>
<Cube currency=“EEK” rate=“15.6466”/>
<Cube currency=“GBP” rate=“0.68160”/>
<Cube currency=“HUF” rate=“276.06”/>
<Cube currency=“LTL” rate=“3.4528”/>
<Cube currency=“LVL” rate=“0.6960”/>
<Cube currency=“MTL” rate=“0.4293”/>
<Cube currency=“PLN” rate=“3.9433”/>
<Cube currency=“SEK” rate=“9.2595”/>
<Cube currency=“SIT” rate=“239.65”/>
<Cube currency=“SKK” rate=“38.385”/>
<Cube currency=“CHF” rate=“1.5746”/>
<Cube currency=“ISK” rate=“93.48”/>
<Cube currency=“NOK” rate=“7.9540”/>
<Cube currency=“BGN” rate=“1.9558”/>
<Cube currency=“HRK” rate=“7.2540”/>
<Cube currency=“RON” rate=“3.5640”/>
<Cube currency=“RUB” rate=“34.0175”/>
<Cube currency=“TRY” rate=“1.9600”/>
<Cube currency=“AUD” rate=“1.6773”/>
<Cube currency=“CAD” rate=“1.4405”/>
<Cube currency=“CNY” rate=“10.0868”/>
<Cube currency=“HKD” rate=“9.8256”/>
<Cube currency=“IDR” rate=“11603.41”/>
<Cube currency=“KRW” rate=“1202.41”/>
<Cube currency=“MYR” rate=“4.6673”/>
<Cube currency=“NZD” rate=“2.0321”/>
<Cube currency=“PHP” rate=“65.875”/>
<Cube currency=“SGD” rate=“2.0025”/>
<Cube currency=“THB” rate=“48.030”/>
<Cube currency=“ZAR” rate=“8.9041”/>
</Cube>
</Cube>
</gesmes:Envelope>

So… for exemple, how do i get the Rate from Currency = USD into a PHP variable??

Thanks in advance,
MagNastiK