php - Fatal Error: Call to undefined function curl() -

this code below twiiter app. tried rectify error no avail

fatal error: call undefined function curl() in c:\wamp\www\tweet\twitter.php on line 47

what have edit in code?

<?php require_once('twitterapiexchange.php');  $settings = array(     'oauth_access_token' => "",     'oauth_access_token_secret' => "",     'consumer_key' => "",     'consumer_secret' => "" );  $url = "https://api.twitter.com/1.1/statuses/user_timeline.json";  $requestmethod = "get";  if (isset($_get['user']))  {$user = $_get['user'];}  else {$user  = "iagdotme";} if (isset($_get['count'])) {$user = $_get['count'];} else {$count = 20;}  $getfield = "?screen_name=$user&count=$count"; $twitter = new twitterapiexchange($settings); $string = json_decode($twitter->setgetfield($getfield) ->buildoauth($url, $requestmethod) ->performrequest(),$assoc = true);  if (is_array($string))  {     foreach($string $items)     {         echo "time , date of tweet: ".$items['created_at']."<br />";         echo "tweet: ". $items['text']."<br />";         echo "tweeted by: ". $items['user']['name']."<br />";         echo "screen name: ". $items['user']['screen_name']."<br />";         echo "followers: ". $items['user']['followers_count']."<br />";         echo "friends: ". $items['user']['friends_count']."<br />";         echo "listed: ". $items['user']['listed_count']."<br /><hr />";     } }  $api = "http://api.twitter.com/1/users/show.xml?screen_name="; $users = file("users.txt", file_ignore_new_lines);  $i = 0; if (is_array($users)) {     foreach($users $user)     {         $data = curl("$api$user");         preg_match("#<description>(.*?)</description>#is", $data, $matches);         $bio[$i]["user"] = $user;         $bio[$i]["description"] = $matches[1];         $i++;     }      function curl($url)     {         $ch = curl_init();         curl_setopt($ch, curlopt_url, $url);         curl_setopt($ch, curlopt_returntransfer, 1);         curl_close($ch);         return curl_exec($ch);     }  } 

move declaration of curl() function outside if(){} block contains it, this.

if (is_array($users)) {   foreach($users $user)   {     $data = curl("$api$user");     preg_match("#<description>(.*?)</description>#is", $data, $matches);     $bio[$i]["user"] = $user;     $bio[$i]["description"] = $matches[1];     $i++;   } }  function curl($url) {     $ch = curl_init();     curl_setopt($ch, curlopt_url, $url);     curl_setopt($ch, curlopt_returntransfer, 1);     $result = curl_exec($ch);     curl_close($ch);     return $result; }