<?php
fclose(fopen('cookie.txt', 'w'));

$url = array(
'login'=>'http://fundux.ru/login',
'index'=>'http://fundux.ru/',
'post'=>'http://fundux.ru/project'
);

$login_data = 'login=XD;pass=WuHoMoCruF';

$messages = file('mess.txt');

$curl = curl_init();
$setopt = array(
CURLOPT_URL => $url['login'],
CURLOPT_POST => 1,
CURLOPT_RETURNTRANSFER => 1,
CURLOPT_TIMEOUT => 60,
CURLOPT_REFERER => $url['index'],
CURLOPT_USERAGENT => 'Mozilla/4.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.3) Gecko/2008092417 Firefox/3.0.3',
CURLOPT_COOKIEJAR => 'cookie.txt',
CURLOPT_HEADER => 0,
);
curl_setopt_array($curl,$setopt);
curl_setopt($curl,CURLOPT_POSTFIELDS, $login_data);
curl_exec($curl);

curl_setopt($curl, CURLOPT_URL, $url['post'].rand(1, 9999));
curl_setopt($curl,CURLOPT_POSTFIELDS, 'message='.$messages[0].'&does=1&secure=1266508429&chas=d8841b08bc');
curl_exec($curl);

curl_setopt($curl, CURLOPT_URL, $url['post'].rand(1, 9999));
curl_setopt($curl,CURLOPT_POSTFIELDS, 'message='.$messages[1].'&does=1&secure=1266508429&chas=d8841b08bc');
curl_exec($curl);

curl_close($curl);


?>

Выдает ошибку

Fatal error: Call to undefined function curl_init() in /home/aiq/s/a/f/safinik/public_html/project.php on line 14
Как исправить ???