system/HTTP/Response.php
public function setCookie(
		$name,
		$value = '',
		$expire = '',
		$domain = '',
		$path = '/',
		$prefix = '',
		$secure = false,
		$httponly = false
	)
	{
		if (is_array($name))
		{
			// always leave 'name' in last place, as the loop will break otherwise, due to $$item
			foreach (['value', 'expire', 'domain', 'path', 'prefix', 'secure', 'httponly', 'name'] as $item)
			{
				if (isset($name[$item]))
				{
					$$item = $name[$item];
				}
			}
		}

		if ($prefix === '' && $this->cookiePrefix !== '')
		{
			$prefix = $this->cookiePrefix;
		}

		if ($domain === '' && $this->cookieDomain !== '')
		{
			$domain = $this->cookieDomain;
		}

		if ($path === '/' && $this->cookiePath !== '/')
		{
			$path = $this->cookiePath;
		}

		if ($secure === false && $this->cookieSecure === true)
		{
			$secure = $this->cookieSecure;
		}

		if ($httponly === false && $this->cookieHTTPOnly !== false)
		{
			$httponly = $this->cookieHTTPOnly;
		}

		if (! is_numeric($expire))
		{
			$expire = time() - 86500;
		}
		else
		{
			$expire = ($expire > 0) ? time() + $expire : 0;
		}

		$this->cookies[] = [
			'name'     => $prefix . $name,
			'value'    => $value,
			'expires'  => $expire,
			'path'     => $path,
			'domain'   => $domain,
			'secure'   => $secure,
			'httponly' => $httponly,
		];

		return $this;
	}
public function setCookie(
		$name,
		$value = '',
		$expire = '',
		$domain = '',
		$path = '/',
		$prefix = '',
		$secure = false,
		$httponly = false
	)
	{
		if (is_array($name))
		{
			// always leave 'name' in last place, as the loop will break otherwise, due to $$item
			foreach (['value', 'expire', 'domain', 'path', 'prefix', 'secure', 'httponly', 'name'] as $item)
			{
				if (isset($name[$item]))
				{
					$$item = $name[$item];
				}
			}
		}

		if ($prefix === '' && $this->cookiePrefix !== '')
		{
			$prefix = $this->cookiePrefix;
		}

		if ($domain === '' && $this->cookieDomain !== '')
		{
			$domain = $this->cookieDomain;
		}

		if ($path === '/' && $this->cookiePath !== '/')
		{
			$path = $this->cookiePath;
		}

		if ($secure === false && $this->cookieSecure === true)
		{
			$secure = $this->cookieSecure;
		}

		if ($httponly === false && $this->cookieHTTPOnly !== false)
		{
			$httponly = $this->cookieHTTPOnly;
		}

		if (! is_numeric($expire))
		{
			$expire = time() - 86500;
		}
		else
		{
			$expire = ($expire > 0) ? time() + $expire : 0;
		}

		$this->cookies[] = [
			'name'     => $prefix . $name,
			'value'    => $value,
			'expires'  => $expire,
			'path'     => $path,
			'domain'   => $domain,
			'secure'   => $secure,
			'httponly' => $httponly,
		];

		return $this;
	}
Set a cookie

Accepts an arbitrary number of binds (up to 7) or an associative
array in the first parameter containing all the values.

@param string|array  $name     Cookie name or array containing binds
@param string        $value    Cookie value
@param string        $expire   Cookie expiration time in seconds
@param string        $domain   Cookie domain (e.g.: '.yourdomain.com')
@param string        $path     Cookie path (default: '/')
@param string        $prefix   Cookie name prefix
@param boolean|false $secure   Whether to only transfer cookies via SSL
@param boolean|false $httponly Whether only make the cookie accessible via HTTP (no javascript)

@return $this