DOMDocument/Xpath - How to get specific row from table

Here is the table dom output:

<table cellspacing="0" cellpadding="0"> <tbody> <tr> <th>Валута</th> <th>Код</th> <th>За единица<br />валута</th> <th>Фиксинг на БНБ</th> <th>Курс купува</th> <th>Курс продава</th> </tr> <tr> <td>Австралийски долар</td> <td><em>AUD</em></td> <td align="center">1</td> <td>1.328960</td> <td>1.29340</td> <td>1.35670</td> </tr><tr> <td>Британска лира</td> <td><em>GBP</em></td> <td align="center">1</td> <td>2.325380</td> <td>2.26920</td> <td>2.37970</td> </tr><tr> <td>Евро</td> <td><em>EUR</em></td> <td align="center">1</td> <td>1.955830</td> <td>1.94900</td> <td>1.95850</td> </tr><tr> <td>Канадски долар</td> <td><em>CAD</em></td> <td align="center">1</td> <td>1.354830</td> <td>1.32380</td> <td>1.38890</td> </tr><tr> <td>Швейцарски франк</td> <td><em>CHF</em></td> <td align="center">1</td> <td>1.800950</td> <td>1.75730</td> <td>1.84140</td> </tr><tr> <td>Щатски долар</td> <td><em>USD</em></td> <td align="center">1</td> <td>1.775770</td> <td>1.73710</td> <td>1.81010</td> </tr><tr> <td>Японска йена</td> <td><em>JPY</em></td> <td align="center">100</td> <td>1.673650</td> <td>1.63180</td> <td>1.71330</td> </tr><tr> <td>Датска крона</td> <td><em>DKK</em></td> <td align="center">10</td> <td>2.629160</td> <td>2.56400</td> <td>2.69070</td> </tr><tr> <td>Норвежка крона</td> <td><em>NOK</em></td> <td align="center">10</td> <td>2.084060</td> <td>2.03290</td> <td>2.13250</td> </tr><tr> <td>Шведска крона</td> <td><em>SEK</em></td> <td align="center">10</td> <td>2.059220</td> <td>2.00700</td> <td>2.10550</td> </tr><tr> <td>Руска рубла</td> <td><em>RUB</em></td> <td align="center">100</td> <td>2.751570</td> <td>2.42030</td> <td>3.11320</td> </tr><tr> <td>Нова румънска лея</td> <td><em>RON</em></td> <td align="center">10</td> <td>4.384380</td> <td>4.17110</td> <td>4.61270</td> </tr> </tbody> </table> 

I am unterested to get only the row with <em>GBP</em> and the last <td></td> text in it. All others i do not need.

<?php error_reporting(E_ALL); ini_set('display_errors', 1); require_once('app/Mage.php'); Mage::app(); $url = 'https://www.fibank.bg/bg/valutni-kursove/page/461'; $curl = curl_init(); curl_setopt($curl, CURLOPT_COOKIE, "ChosenSite=www; SportsDirect_AnonymousUserCurrency=GBP; language=en-GB"); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false); curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($curl, CURLOPT_SSLVERSION, 3); curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 10); curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) Gecko/20080311 Firefox/2.0.0.13'); curl_setopt($curl, CURLOPT_VERBOSE, true); $str = curl_exec($curl); curl_close($curl); libxml_use_internal_errors(true); $doc = new \DOMDocument(); $doc->loadHTML($str); $xpath = new \DOMXpath($doc); $value = $xpath->query('//td[em="GBP"]/parent::tr/td[last()]')->item(0)->nodeValue; print_r($value); 

This code is completely not working. Can you please help me out resolve it.

Thanks in advance!