Curl login with form

Hello,

i have a little website, and i want try to connect with curl

for login

$url = "https://www.mywebsite/login.php";

$ch2 = curl_init();    
curl_setopt($ch2, CURLOPT_RETURNTRANSFER, 1); 

curl_setopt($ch2, CURLOPT_URL, $url); 
$timeout = 30;
curl_setopt($ch2, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch2, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt ($ch2, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch2, CURLOPT_TIMEOUT,         10); 
curl_setopt($ch2, CURLOPT_CONNECTTIMEOUT,  $timeout );


curl_setopt ($ch2, CURLOPT_POST, 1); 
curl_setopt ($ch2,CURLOPT_POSTFIELDS,"xxxx");     

$result = curl_exec($ch2);

for take header and cookie PHPSESSID

$ch = curl_init('https://www.mywebsite/apercu.php');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
// get headers too with this line
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);




$result = curl_exec($ch);
// get cookie
// multi-cookie variant contributed by @Combuster in comments
preg_match_all('/^Set-Cookie:\s*([^;]*)/mi', $result, $matches);
$cookies = array();
foreach($matches[1] as $item) {
    parse_str($item, $cookie);
    $cookies = array_merge($cookies, $cookie);
}

//var_dump($cookies['PHPSESSID']);exit;

And after i want recover data

$ch = curl_init('https://www.mywebsite/apercu.php');

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

//Retrieving session ID 
$strCookie = 'PHPSESSID=' . $cookies['PHPSESSID'] . '; path=/';    

//We pass the sessionid of the browser within the curl request
curl_setopt( $ch, CURLOPT_COOKIE, $strCookie ); 

//We receive the answer as if we were the browser
$curl_response = curl_exec($ch);

 //OPTIONAL - Redirect to another page after login
$url = "https://www.mywebsite/apercu.php";
curl_setopt ($ch2, CURLOPT_POST, 0); 
curl_setopt($ch2, CURLOPT_URL, $url);
$result = curl_exec($ch2);
  //end OPTIONAL 

curl_close($ch2); 
echo $result;

but that dont work, its my first curl login, so maybe i fail with cookie ? how send the cookie ?

Thanks