CSRF Token : unable to use the same token to log in - php

Question

I'm trying by PHP and cURL to log in a website, but this website use a CSRF token. My PHP code is catching the token (checked with a echo) but I couldn't log in after that (CSRF token error).
Do you have any idea of how I could keep the same cURL session in order to have the same CSRF token (otherwise the server will generate a new one).
I have added comment to my code in order to make it more understandable
Thank you in advance for all your help
Here my code :
<?php
$url = "https://www.boursedirect.fr/fr/login";
// obtain the CSRF Token
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:100.0) Gecko/20100101 Firefox/100.0");
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_COOKIESESSION, true);
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookie'); // to handle cookies during login
curl_setopt($ch, CURLOPT_COOKIEFILE, 'tmp'); // idem
$headers = [
'Keep-Alive: timeout=5, max=100',
'Connection: keep-alive'
];
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$res = curl_exec($ch);
$dom = new DomDocument();
# $dom->loadHTML($res);
$elem = $dom->getElementById("bd_auth_login_type__token");
$token = $elem->getAttribute("value");
/* extract the token value hidden in <input type="hidden" id="bd_auth_login_type__token" name="bd_auth_login_type[_token]" class="form-control" value="yDVyvTXUhIJjnAj9mTfBO3OKgRpI0zLCUZY2BM_O1E8" /> __ FULLY WORKING */
// second part, trying to log in (same URL)
$username = "X";
$password = "X";
curl_setopt($ch, CURLOPT_POST, true); // switching to POST
curl_setopt($ch, CURLOPT_POSTFIELDS, 'bd_auth_login_type[login]='.$username.'&bd_auth_login_type[password]='.$password.'&bd_auto_login_type[submit]=&bd_auth_login_type[token]='.$token);
$res = curl_exec($ch);
echo $res; // result is a CSRF token error, so unable to log in
curl_close($ch);
?>

Answer 1

Working script thanks to #miken32 help !
<?php
$url = "/";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:100.0) Gecko/20100101 Firefox/100.0");
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
$headers = [
'Keep-Alive: timeout=5, max=100',
'Connection: keep-alive'
];
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$res = curl_exec($ch);
$dom = new DomDocument();
# $dom->loadHTML($res);
$elem = $dom->getElementById("bd_auth_login_type__token");
$token = $elem->getAttribute("value");
$data = array(
"bd_auth_login_type[login]" => "X",
"bd_auth_login_type[password]" => "X",
"bd_auto_login_type[submit]" => "",
"bd_auth_login_type[_token]" => $token
);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
$res = curl_exec($ch);
curl_close($ch);
?>