✨ add PHP8.0 and PHP8.1 quick support

Signed-off-by: otengkwame <[email protected]>

Author: otengkwame

framework/core/Input.php

@@ -572,7 +572,7 @@ public function ip_address()
 	 * @param	string	$which	IP protocol: 'ipv4' or 'ipv6'
 	 * @return	bool
 	 */
-	public function valid_ip($ip, $which = '')
+	public function valid_ip($ip = '', $which = '')
 	{
 		switch (strtolower($which))
 		{
@@ -583,7 +583,7 @@ public function valid_ip($ip, $which = '')
 				$which = FILTER_FLAG_IPV6;
 				break;
 			default:
-				$which = NULL;
+				$which = FILTER_DEFAULT;
 				break;
 		}
 

framework/libraries/Form_validation.php

@@ -1052,11 +1052,11 @@ public function set_checkbox($field = '', $value = '', $default = FALSE)
 	 * @param	string
 	 * @return	bool
 	 */
-	public function required($str)
+	public function required($str = '')
 	{
 		return is_array($str)
 			? (empty($str) === FALSE)
-			: (trim($str) !== '');
+			: (isset($str) ? trim($str) !== '' : FALSE);
 	}
 
 	// --------------------------------------------------------------------

framework/libraries/Session/Session_driver.php

@@ -139,19 +139,9 @@ public function php5_validate_id()
 	 */
 	protected function _cookie_destroy()
 	{
-		// return setcookie(
-		// 	$this->_config['cookie_name'],
-		// 	NULL,
-		// 	1,
-		// 	$this->_config['cookie_path'],
-		// 	$this->_config['cookie_domain'],
-		// 	$this->_config['cookie_secure'],
-		// 	TRUE
-		// );
-		// using setcookie with array option to add cookie 'samesite' attribute
 		return setcookie(
 			$this->_config['cookie_name'],
-			NULL,
+			'',
 			[
 				'expires' => 1, 
 				'path' => $this->_config['cookie_path'],