Script per sondaggio non funziona...

[ANTAGONIA]

Buon pomeriggio, ho questo problema.Vorrei sapere per favore come mai, questo script, preso qui su Html.it, per il sondaggio, non mi funziona.
In pratica non riesce ne a scrivere ne a leggere, nel .txt.
Questo è lo script:

<?
$RESULT_FILE_NAME = "php_poll/poll_data.txt";
	// En: Absolute path and name to file contain poll data.
	// Fr: Chemin absolu (complet) et Nom du fichier contenant les donne.

$QUESTION = "How do you like this Script?";
	// En: Question Text.
	// Fr: Texte de la question.
$ANSWER = array("Love it!", "Like it!", "Its okay..", "I dislike it", "I hate it..");
	// En: All answer.
	// Fr: Reponses possibles

$IMG_DIR_URL = "./vote";
	// En: URL Directory of poll graphs.
	// Fr: URL du repertoire des images.

$REVOTE_TIME = 3600;
	// En: Time (second) after people can revote, use cookies.
	// Fr: Temps en second apres lequel une personne peut revoter.

// End  Necessary Variables section
/******************************************************************************/

$vote = $_POST['vote'];
$result = $_POST['result'];
$answer = $_POST['answer'];

if (! $vote && ! $result) {
	echo "<FORM METHOD=\"POST\">\n";
	echo "	<TABLE WIDTH=100% BORDER=1>
				<TR>
					<TD>
						<TABLE WIDTH=\"100%\" BORDER=0>\n";
					echo "	<TR>
								<TH>$QUESTION</TH>
							</TR>\n";
			while (list($key, $val) = each($ANSWER)) {
					echo "	<TR>
								<TD align=\"center\">
									<INPUT TYPE=\"radio\" NAME=\"answer\" VALUE=\"$key\"> $val $key
								</TD>
							</TR>\n";
			} 
					echo "	<TR>
								<TD align=\"center\">
									<INPUT TYPE=\"Submit\" NAME=\"vote\" VALUE=\" Vote \">
								</TD>
							</TR>\n";
					echo "	<TR>
								<TD align=\"center\">
									<INPUT TYPE=\"Submit\" NAME=\"result\" VALUE=\" See Result \">
								</TD>
							</TR>\n";
				echo "	</TABLE>
					</TD>
				</TR>
			</TABLE>
		</FORM>";
} else {

	$file_array = file($RESULT_FILE_NAME); // or error("Can not open \$RESULT_FILE_NAME");

	// En: Save result
	// Fr: Enregistre le resultat
	if ($answer < count($ANSWER) && $vote) {
		if (count($file_array) < count($ANSWER))  {
			$file_array = array("0\n", "0\n", "0\n", "0\n", "0\n");
		}
		$old_answer = $file_array[$answer];
		echo "1: " . $old_answer;
		$old_answer = preg_replace("/\n\r*/", "", $old_answer);
		echo "2: " . $old_answer;
		$file_array[$answer] = ($old_answer + 1)."\n";
		echo "3: " . $file_array[$answer];
		$file = join('', $file_array);
		echo "4: " . $file;
		$fp = fopen($RESULT_FILE_NAME, "w"); //or error("Can not write \$RESULT_FILE_NAME");
		flock($fp, 1);
		fputs($fp, $file); //scrive nel file                                                    
		flock($fp, 3);
		fclose($fp);
		echo "rate saved";
	}

	// En: Display result
	// Fr: Affiche le resultat
	while (list($key, $val) = each($file_array)) {
		$total += $val;
	}

	echo "<h2>PHP Poll vote results :</h2>";
	echo "<TABLE CELLSPACING=2 CELLPADDING=1 BORDER=1>";
	echo "<tr><th>What</th><th>Percentage</th><th>Votes</th></tr>";

	while (list($key, $val) = each($ANSWER)) {
		$percent =  $file_array[$key] * 100 / $total;
		$percent_int = floor($percent);
		$percent_float = number_format($percent, 1);
		$tp += $percent_float;
		echo "<tr><td> $ANSWER[$key] </td><td><img height=9 src=\"$IMG_DIR_URL/vote_left.gif\"><img height=9 width=\"$percent_int\" src=\"$IMG_DIR_URL/vote_middle.gif\"><img height=9 src=\"$IMG_DIR_URL/vote_right.gif\"> $percent_float % </td><td>$file_array[$key]</td></tr>";
	}

	echo "</TABLE>
";
}

?>

Scusate se ho postato tutto il codice, ma..non sapevo come fare..!!
Attendo delucidazioni..
Grazie 1000

[ANTAGONIA]

ragazzi, potete dirmi per favore dov'è l'errore?
Sto diventando matto, c'a faz chiù...
vi ringrazio, come sempre...