cURL y regular expression - Problema

[Most]

entonces asi?:

Código PHP:

<?php
$cURL = curl_init();
$URL = 'http://www.forosdelweb.com/f18/curl-regular-expression-problema-818261/';
curl_setopt($cURL, CURLOPT_URL, $URL);
curl_setopt($cURL, CURLOPT_RETURNTRANSFER,1);
$URL_CODIGO = curl_exec ($cURL);
curl_close ($cURL);
function recoger_texto($aqui?, $aqui?)
{
preg_match("<b>(.*)</b>", $URL_CODIGO, $matches);
return true;
} 
echo $matches;
?>