From 114581e97f18eaab8252cb4f03d74fd8b7f4faae Mon Sep 17 00:00:00 2001
From: Madhura Jayaratne <madhura.cj@gmail.com>
Date: Tue, 19 May 2015 16:58:49 +0530
Subject: [PATCH] lower_case_table_names is read only and can be cached

Signed-off-by: Madhura Jayaratne <madhura.cj@gmail.com>
---
 libraries/Util.class.php | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/libraries/Util.class.php b/libraries/Util.class.php
index 9d1e15d966..3f52417a9c 100644
--- a/libraries/Util.class.php
+++ b/libraries/Util.class.php
@@ -4566,9 +4566,14 @@ class PMA_Util
      */
     public static function getCollateForIS()
     {
-        $lowerCaseTableNames = $GLOBALS['dbi']->fetchValue(
-            "SHOW VARIABLES LIKE 'lower_case_table_names'", 0, 1
-        );
+        if (self::cacheExists('lower_case_table_names')) {
+            $lowerCaseTableNames = self::cacheGet('lower_case_table_names');
+        } else {
+            $lowerCaseTableNames = $GLOBALS['dbi']->fetchValue(
+                "SHOW VARIABLES LIKE 'lower_case_table_names'", 0, 1
+            );
+            self::cacheSet('lower_case_table_names', $lowerCaseTableNames);
+        }
 
         if ($lowerCaseTableNames === '0') {
             return "COLLATE utf8_bin";