- simplexml_load_string: documentation ( source)
- print_r: documentation ( source)
<?php
$res = simplexml_load_string( '<root><Result RC="0" /><Login SID="9982A014EC8644D0A4A760AE9026E154" IsAdmin="1"/></root>' );
$sid = $res->Login['SID'];
print_r( (string)$sid );