Cookiejar to $_COOKIE and back

cookiejar.php

function save_to_cookiejar($cookiefile)
{
    $jar = "";
    foreach ($_COOKIE as $name => $value)
    {
        $name = urlencode($name);
        $value = urlencode($value);
        $jar .= "{$_SERVER['HTTP_HOST']}\tFALSE\t/\tFALSE\t0\t{$name}\t{$value}\n";
    }
    file_put_contents($cookiefile, $jar);
}

/**
 * Source: http://stackoverflow.com/a/26521309/276152
 */
function load_from_cookiejar($cookiefile)
{
    $jar = file_get_contents($cookiefile);
    foreach (explode(PHP_EOL, $jar) as $line)
    {
        $cookie = array();

        // detect httponly cookies and remove #HttpOnly prefix
        if (substr($line, 0, 10) == '#HttpOnly_')
        {
            $line = substr($line, 10);
            $cookie['httponly'] = true;
        }
        else
        {
            $cookie['httponly'] = false;
        }

        // we only care for valid cookie def lines
        if($line && $line[0] != '#' && substr_count($line, "\t") == 6)
        {
            // get tokens in an array
            $tokens = explode("\t", $line);

            // trim the tokens
            $tokens = array_map('trim', $tokens);

            // Extract the data
            $cookie['domain'] = ($tokens[1] === 'FALSE' ? '.' : '') . $tokens[0]; // The domain that created AND can read the variable.
            $cookie['path'] = $tokens[2];   // The path within the domain that the variable is valid for.
            $cookie['secure'] = $tokens[3] === 'TRUE'; // A TRUE/FALSE value indicating if a secure connection with the domain is needed to access the variable.
            $cookie['expire'] = $tokens[4];  // The UNIX time that the variable will expire on.
            $cookie['name'] = urldecode($tokens[5]);   // The name of the variable.
            $cookie['value'] = urldecode($tokens[6]);  // The value of the variable.

            setcookie($cookie['name'], $cookie['value'], $cookie['expire'], $cookie['path'], $cookie['domain'], $cookie['secure'], $cookie['httponly']);
        }
    }
}