Fixes a few more PHP 8.4 compatibility issues.

Author: pocketarc

system/core/Exceptions.php

@@ -62,22 +62,25 @@ class CI_Exceptions {
 	 * @var	array
 	 */
 	public $levels = array(
-		E_ERROR			=>	'Error',
-		E_WARNING		=>	'Warning',
-		E_PARSE			=>	'Parsing Error',
-		E_NOTICE		=>	'Notice',
-		E_CORE_ERROR		=>	'Core Error',
-		E_CORE_WARNING		=>	'Core Warning',
-		E_COMPILE_ERROR		=>	'Compile Error',
-		E_COMPILE_WARNING	=>	'Compile Warning',
-		E_USER_ERROR		=>	'User Error',
-		E_USER_WARNING		=>	'User Warning',
-		E_USER_NOTICE		=>	'User Notice',
+		E_ERROR => 'Error',
+		E_RECOVERABLE_ERROR => 'Recoverable Error',
+		E_WARNING => 'Warning',
+		E_PARSE => 'Parsing Error',
+		E_NOTICE => 'Notice',
+		E_DEPRECATED => 'Deprecated Notice',
+		E_CORE_ERROR => 'Core Error',
+		E_CORE_WARNING => 'Core Warning',
+		E_COMPILE_ERROR => 'Compile Error',
+		E_COMPILE_WARNING => 'Compile Warning',
+		E_USER_ERROR => 'User Error',
+		E_USER_WARNING => 'User Warning',
+		E_USER_NOTICE => 'User Notice',
+		E_USER_DEPRECATED => 'User Deprecated Notice',
 
 		# 2048 is E_STRICT, but it's deprecated in PHP 8.4.
 		# We're keeping this here for backwards compatibility.
 		# If we're on older PHP, E_STRICT errors will be labelled correctly, and if we're on PHP 8.4+, this will be ignored.
-		2048 =>	'Runtime Notice'
+		2048 => 'Strict Notice',
 	);
 
 	/**

system/libraries/Encryption.php

@@ -366,10 +366,10 @@ public function create_key($length)
 	 * Encrypt
 	 *
 	 * @param	string	$data	Input data
-	 * @param	array	$params	Input parameters
+	 * @param	array|null	$params	Input parameters
 	 * @return	string
 	 */
-	public function encrypt($data, array $params = NULL)
+	public function encrypt($data, $params = NULL)
 	{
 		if (($params = $this->_get_params($params)) === FALSE)
 		{
@@ -501,10 +501,10 @@ protected function _openssl_encrypt($data, $params)
 	 * Decrypt
 	 *
 	 * @param	string	$data	Encrypted data
-	 * @param	array	$params	Input parameters
+	 * @param	array|null	$params	Input parameters
 	 * @return	string
 	 */
-	public function decrypt($data, array $params = NULL)
+	public function decrypt($data, $params = NULL)
 	{
 		if (($params = $this->_get_params($params)) === FALSE)
 		{

system/libraries/Session/Session.php

@@ -417,7 +417,7 @@ protected function _configure_sid_length()
 		{
 			$bits_per_character = (int) ini_get('session.sid_bits_per_character');
 			$sid_length         = (int) ini_get('session.sid_length');
-			if (($bits = $sid_length * $bits_per_character) < 160)
+			if (($bits = $sid_length * $bits_per_character) < 160 && version_compare(PHP_VERSION, '8.4', '<'))
 			{
 				// Add as many more characters as necessary to reach at least 160 bits
 				$sid_length += (int) ceil((160 % $bits) / $bits_per_character);