no bro,with php from my hosting.

i have this code but i got this eror:

Code: 
  $imgpath = $path . "screens/" . $image;
    $postfields = array();
    $postfields['image'] = "@$imgpath";
    $postfields['submit'] = "submit";
    $page = curl("http://lulzimg.com/app.php", $postfields, "");
    preg_match('#http(.*)#', $page, $match);
    $imglink = trim($match[0]);
    echo $imglink;
    echo "<br />";
Code: 
Fatal error:  Call to undefined function curl() in img.php on line 6
my server have installed phpcurl5 but i got eror