服務器錯誤消息：沒有文件訪問

我有問題，但不知道在哪裏解決它。我的模板在xampp中運行良好，但在主機服務器上不起作用。我收到以下消息：服務器錯誤消息：沒有文件訪問

警告：file_get_contents() [function.file-get-contents]：在主頁/....../ twitter.php的服務器配置中禁用URL文件訪問。

的錯誤是在線64

<?php 
/* 
For use in the "Parse Twitter Feeds" code below 
*/ 
define("SECOND", 1); 
define("MINUTE", 60 * SECOND); 
define("HOUR", 60 * MINUTE); 
define("DAY", 24 * HOUR); 
define("MONTH", 30 * DAY); 
function relativeTime($time) 
{ 
$delta = time() - $time; 
if ($delta < 2 * MINUTE) { 
    return "1 min ago"; 
} 
if ($delta < 45 * MINUTE) { 
    return floor($delta/MINUTE) . " min ago"; 
} 
if ($delta < 90 * MINUTE) { 
    return "1 hour ago"; 
} 
if ($delta < 24 * HOUR) { 
    return floor($delta/HOUR) . " hours ago"; 
} 
if ($delta < 48 * HOUR) { 
    return "yesterday"; 
} 
if ($delta < 30 * DAY) { 
    return floor($delta/DAY) . " days ago"; 
} 
if ($delta < 12 * MONTH) { 
    $months = floor($delta/DAY/30); 
    return $months <= 1 ? "1 month ago" : $months . " months ago"; 
} else { 
    $years = floor($delta/DAY/365); 
    return $years <= 1 ? "1 year ago" : $years . " years ago"; 
} 
} 


/* 
Parse Twitter Feeds 

*/ 
function parse_cache_feed($usernames, $limit, $type) { 
$username_for_feed = str_replace(" ", "+OR+from%3A", $usernames); 
$feed = "http://twitter.com/statuses/user_timeline.atom?screen_name=" . $username_for_feed . "&count=" . $limit; 
$usernames_for_file = str_replace(" ", "-", $usernames); 
$cache_file = dirname(__FILE__).'/cache/' . $usernames_for_file . '-twitter-cache-' . $type; 

if (file_exists($cache_file)) { 
    $last = filemtime($cache_file); 
    } 

$now = time(); 
$interval = 600; // ten minutes 
// check the cache file 
if (!$last || (($now - $last) > $interval)) { 
    // cache file doesn't exist, or is old, so refresh it 
    $cache_rss = file_get_contents($feed); (this is line 64)

如何給我的主機服務器上此訪問任何幫助嗎？

來源

2010-04-08 iMayne