diff --git a/phpBB/common.php b/phpBB/common.php
index 34f8071a83..7b3a57c7d8 100644
--- a/phpBB/common.php
+++ b/phpBB/common.php
@@ -88,7 +88,7 @@ else
 	set_magic_quotes_runtime(0);
 
 	// Be paranoid with passed vars
-	if (@ini_get('register_globals') == '1' || strtolower(@ini_get('register_globals')) == 'on')
+	if (@ini_get('register_globals') == '1' || strtolower(@ini_get('register_globals')) == 'on' || !function_exists('ini_get'))
 	{
 		deregister_globals();
 	}
diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index d4368d5ebf..9aaae9ef5a 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -204,7 +204,7 @@ function still_on_time($extra_time = 15)
 
 	if (empty($max_execution_time))
 	{
-		$max_execution_time = (function_exists('ini_get')) ? (int) ini_get('max_execution_time') : (int) get_cfg_var('max_execution_time');
+		$max_execution_time = (function_exists('ini_get')) ? (int) @ini_get('max_execution_time') : (int) @get_cfg_var('max_execution_time');
 
 		// If zero, then set to something higher to not let the user catch the ten seconds barrier.
 		if ($max_execution_time === 0)
diff --git a/phpBB/install/install_install.php b/phpBB/install/install_install.php
index 593f98d7bb..0d8e9d1c3b 100755
--- a/phpBB/install/install_install.php
+++ b/phpBB/install/install_install.php
@@ -278,7 +278,7 @@ class install_install extends module
 
 			foreach ($checks as $mb_checks)
 			{
-				$ini_val = ini_get('mbstring.' . $mb_checks[0]);
+				$ini_val = @ini_get('mbstring.' . $mb_checks[0]);
 				switch ($mb_checks[1])
 				{
 					case '&':