Here's the code (with a function) :

PHP Code: 
function postHost($url$data$cookie$credentials){
    
$ch curl_init();
    
curl_setopt($chCURLOPT_URL$url);
    if(
$cookie != "")
        
curl_setopt($chCURLOPT_COOKIE$cookie);
    if(
$data != ""){
        
curl_setopt($chCURLOPT_POST1);
        
curl_setopt($chCURLOPT_POSTFIELDS$data);
    }
    if(
$credentials != ""){
        
curl_setopt($chCURLOPT_HTTPAUTHCURLAUTH_BASIC);
        
curl_setopt($chCURLOPT_USERPWD$credentials);

    }
    
//curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    
curl_setopt($chCURLOPT_HEADER1);
    
curl_setopt($chCURLOPT_RETURNTRANSFER,1);
    
curl_setopt($chCURLOPT_HTTPHEADER, array('Expect:')); 
    
$page curl_exec($ch);
    
curl_close($ch);
    return 
$page;
        
}
$img =  postHost("http://www.lulzimg.com/upload.php?submit=lulz&url=$url""""""");
preg_match_all("/http:\/\/lulzimg.com\/[a-z0-9]+\/[a-z0-9A-Z.\-\[\]]+/"$img$matches);
$link $matches[0][1];
echo 
"Your link sir: $link"
EDIT: l0calh0st, i'm precise