php - Logging in to external website(s) with cURL -

i'm trying log in external website using curl. want user enter username , password on index page, , when user clicks on submit button, loginform post both username , password logincheck.php. there checks if username registered in database. if true, should forward username , password external site , try logging in there. if not, should see echo saying "failed".

<?php error_reporting(-1);  ob_start(); $host="xxxxxxx"; $username="xxxxxxx"; $password="xxxxxxx"; $db_name="xxxxxxx"; $tbl_name="xxxxxxx";  mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select db");  $myusername=$_post['loginid']; $mypassword=$_post['password']; $loginurl1 = 'http://externalwebsite.com/';  $myusername = stripslashes($myusername); $myusername = mysql_real_escape_string($myusername);  $sql="select * $tbl_name login='$myusername'"; $result=mysql_query($sql); if (false === $result) {     echo mysql_error(); exit; }  $count=mysql_num_rows($result);   $cookiefile = "test/mycookiefile.txt"; if(!file_exists($cookiefile)) {     $fh = fopen($cookiefile, "w");     fwrite($fh, "");     fclose($fh); }  if($count==1){ session_start(); $_session['myusername'] = $myusername;  $curl = curl_init();     curl_setopt($curl, curlopt_url, $loginurl1);     curl_setopt($curl, curlopt_post, true);     curl_setopt($curl, curlopt_postfields, 'gebruikersnaam='.$myusername.'&wachtwoord='.$mypassword);     curl_setopt($curl, curlopt_failonerror, true);     curl_setopt($curl, curlopt_followlocation, true);     curl_setopt($curl, curlopt_cookiefile, $cookiefile);     curl_setopt($curl, curlopt_cookiejar, $cookiefile);     curl_setopt($curl, curlopt_returntransfer, true);     curl_setopt($curl, curlopt_ssl_verifyhost, false);     curl_setopt($curl, curlopt_ssl_verifypeer, false);       curl_exec($curl);     $result = curl_exec($curl);     header('location: http://externalwebsite.com/');     curl_close(); } else {     echo "failed"; } ob_end_flush(); ?> 

now, redirects fine external website, won't attempt log in on site, no matter try. doing wrong? missing something?