Problema con "if"

[satifal]

<?php
$urls = array('URL1', 'URL2', 'URL3');
$url = 'http://' . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'];
foreach ($urls as $u) {
    if (strpos($url, $u)) {
        echo "Trovato
";
    } else {
        echo "Non trovato
";
    }
}
?>