models/cookies.php


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<?php
namespace Database;
use PDO;

class Cookie extends Table {
    public $UID;
    public $Token;
    public $Expires;

    static function create(string $UID) : string {
        $Token = uuidv4();
        Table::_create(
            "Cookies",
            "(UID, Token, Expires)",
            "(\"$UID\", \"$Token\", NOW() + INTERVAL 30 DAY)",
        );
        return $Token;
    }
}

// Taken from https://stackoverflow.com/a/15875555
function uuidv4()
{
  $data = random_bytes(16);

  $data[6] = chr(ord($data[6]) & 0x0f | 0x40); // set version to 0100
  $data[8] = chr(ord($data[8]) & 0x3f | 0x80); // set bits 6-7 to 10

  return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));
}