$url = 'http://site.com/some.php';

$post_data = "w=&login=1182010500&e91db3a=mylogin&edfa0d9=mypassword&ee0afeb=";

$curl = curl_init ( );

curl_setopt ( $curl, CURLOPT_URL, $url );

curl_setopt ( $curl, CURLOPT_POST, 1 );
curl_setopt ( $curl, CURLOPT_POSTFIELDS, $post_data );

curl_setopt ( $curl, CURLOPT_COOKIESESSION, 1 );
curl_setopt ( $curl, CURLOPT_COOKIEJAR, 'cookie.txt' );
curl_setopt ( $curl, CURLOPT_COOKIEFILE, 'cookie.txt' );

curl_setopt ( $curl, CURLOPT_TIMEOUT, 5 );

curl_exec ( $curl );