<?php
$xml = '<entries>
<entry>
<title lang="en">Sample</title>
<entrydate>0</entrydate>
<contents>0</contents>
<entrynum>0</entrynum>
</entry>
<entry>
<title lang="fr">Sample</title>
<entrydate>1</entrydate>
<contents>1</contents>
<entrynum>1</entrynum>
</entry>
</entries>';
$doc = new DOMDocument();
$doc->loadXML($xml);
$xpath = new DOMXpath($doc);
$entry = $xpath->query("//entry[title[@lang='fr']]")->item(0);
$entry->parentNode->removeChild($entry);
$xml = $doc->savexml();
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