diff --git a/libraries/header.inc.php b/libraries/header.inc.php
index eb17e4cc98..54c59b2a6a 100644
--- a/libraries/header.inc.php
+++ b/libraries/header.inc.php
@@ -39,7 +39,7 @@ if (isset($GLOBALS['is_ajax_request']) && !$GLOBALS['is_ajax_request']) {
         /**
          * Gets a core script and starts output buffering work
          */
-        require_once './libraries/ob.lib.php';
+        include_once './libraries/ob.lib.php';
         PMA_outBufferPre();
 
         // if database storage for user preferences is transient, offer to load
@@ -54,9 +54,9 @@ if (isset($GLOBALS['is_ajax_request']) && !$GLOBALS['is_ajax_request']) {
         // to a seperate file. It can now be included by header.inc.php,
         // querywindow.php.
 
-        require_once './libraries/header_http.inc.php';
-        require_once './libraries/header_meta_style.inc.php';
-        require_once './libraries/header_scripts.inc.php';
+        include_once './libraries/header_http.inc.php';
+        include_once './libraries/header_meta_style.inc.php';
+        include_once './libraries/header_scripts.inc.php';
         ?>
         <meta name="OBGZip" content="<?php echo ($GLOBALS['cfg']['OBGzip'] ? 'true' : 'false'); ?>" />
         <?php /* remove vertical scroll bar bug in ie */ ?>
@@ -76,7 +76,7 @@ if (isset($GLOBALS['is_ajax_request']) && !$GLOBALS['is_ajax_request']) {
 
         // Include possible custom headers
         if (file_exists(CUSTOM_HEADER_FILE)) {
-            require CUSTOM_HEADER_FILE;
+            include CUSTOM_HEADER_FILE;
         }
 
 
@@ -89,7 +89,7 @@ if (isset($GLOBALS['is_ajax_request']) && !$GLOBALS['is_ajax_request']) {
 
         // offer to load user preferences from localStorage
         if ($userprefs_offer_import) {
-            require_once './libraries/user_preferences.lib.php';
+            include_once './libraries/user_preferences.lib.php';
             PMA_userprefs_autoload_header();
         }
 
@@ -148,7 +148,7 @@ if (isset($GLOBALS['is_ajax_request']) && !$GLOBALS['is_ajax_request']) {
                     // if the table is being dropped, $_REQUEST['purge'] is set to '1'
                     // so do not display the table name in upper div
                     if (strlen($GLOBALS['table']) && ! (isset($_REQUEST['purge']) && $_REQUEST['purge'] == '1')) {
-                        require_once './libraries/tbl_info.inc.php';
+                        include_once './libraries/tbl_info.inc.php';
 
                         echo $separator;
                         printf($item,
@@ -179,7 +179,7 @@ if (isset($GLOBALS['is_ajax_request']) && !$GLOBALS['is_ajax_request']) {
                         /**
                          * Settings for relations stuff
                          */
-                        require_once './libraries/relation.lib.php';
+                        include_once './libraries/relation.lib.php';
                         $cfgRelation = PMA_getRelationsParam();
 
                         // Get additional information about tables for tooltip is done
@@ -208,7 +208,7 @@ if (isset($GLOBALS['is_ajax_request']) && !$GLOBALS['is_ajax_request']) {
 } //end if (!$GLOBALS['is_ajax_request'])
 else {
     if (empty($GLOBALS['is_header_sent'])) {
-        require_once './libraries/header_http.inc.php';
+        include_once './libraries/header_http.inc.php';
         $GLOBALS['is_header_sent'] = true;
     }
 }
diff --git a/libraries/mult_submits.inc.php b/libraries/mult_submits.inc.php
index 6a165417c3..6a4c2422a8 100644
--- a/libraries/mult_submits.inc.php
+++ b/libraries/mult_submits.inc.php
@@ -25,7 +25,7 @@ if (! empty($submit_mult)
     } elseif (isset($selected_tbl) && !empty($selected_tbl)) {
         // coming from database structure view - do something with selected tables
         if ($submit_mult == 'print') {
-            require './tbl_printview.php';
+            include './tbl_printview.php';
         } else {
            $selected = $selected_tbl;
            switch ($submit_mult) {
@@ -47,7 +47,7 @@ if (! empty($submit_mult)
                    break;
                case 'export':
                    unset($submit_mult);
-                   require 'db_export.php';
+                   include 'db_export.php';
                    exit;
                    break;
            } // end switch
@@ -102,7 +102,7 @@ if (! empty($submit_mult)
                 $mult_btn   = __('Yes');
                 break;
             case 'change':
-                require './tbl_alter.php';
+                include './tbl_alter.php';
                 break;
             case 'browse':
                 // this should already be handled by tbl_structure.php
@@ -121,18 +121,18 @@ if (! empty($submit_mult)
 if (!empty($submit_mult) && !empty($what)) {
     unset($message);
 
-    require_once './libraries/header.inc.php';
+    include_once './libraries/header.inc.php';
     if (strlen($table)) {
-        require './libraries/tbl_common.php';
+        include './libraries/tbl_common.php';
         $url_query .= '&amp;goto=tbl_sql.php&amp;back=tbl_sql.php';
-        require './libraries/tbl_info.inc.php';
-        require_once './libraries/tbl_links.inc.php';
+        include './libraries/tbl_info.inc.php';
+        include_once './libraries/tbl_links.inc.php';
     } elseif (strlen($db)) {
-        require './libraries/db_common.inc.php';
-        require './libraries/db_info.inc.php';
+        include './libraries/db_common.inc.php';
+        include './libraries/db_info.inc.php';
     } else {
-        require_once './libraries/server_common.inc.php';
-        require_once './libraries/server_links.inc.php';
+        include_once './libraries/server_common.inc.php';
+        include_once './libraries/server_links.inc.php';
     }
 
     // Builds the query
@@ -288,7 +288,7 @@ if (!empty($submit_mult) && !empty($what)) {
     </fieldset>
     <?php
     }
-    require './libraries/footer.inc.php';
+    include './libraries/footer.inc.php';
 
 } // end if
 
@@ -299,7 +299,7 @@ if (!empty($submit_mult) && !empty($what)) {
 elseif ($mult_btn == __('Yes')) {
 
     if ($query_type == 'drop_db' || $query_type == 'drop_tbl' || $query_type == 'drop_fld') {
-        require_once './libraries/relation_cleanup.lib.php';
+        include_once './libraries/relation_cleanup.lib.php';
     }
 
     $sql_query      = '';
@@ -465,7 +465,7 @@ elseif ($mult_btn == __('Yes')) {
     }
 
     if ($use_sql) {
-        require './sql.php';
+        include './sql.php';
     } elseif (!$run_parts) {
         PMA_DBI_select_db($db);
         $result = PMA_DBI_try_query($sql_query);
diff --git a/libraries/rte/rte_main.inc.php b/libraries/rte/rte_main.inc.php
index 988cf6b86c..796467ea5e 100644
--- a/libraries/rte/rte_main.inc.php
+++ b/libraries/rte/rte_main.inc.php
@@ -23,12 +23,12 @@ if ($GLOBALS['is_ajax_request'] != true) {
      * Displays the header and tabs
      */
     if (! empty($table) && in_array($table, PMA_DBI_get_tables($db))) {
-        require_once './libraries/tbl_common.php';
-        require_once './libraries/tbl_links.inc.php';
+        include_once './libraries/tbl_common.php';
+        include_once './libraries/tbl_links.inc.php';
     } else {
         $table = '';
-        require_once './libraries/db_common.inc.php';
-        require_once './libraries/db_info.inc.php';
+        include_once './libraries/db_common.inc.php';
+        include_once './libraries/db_info.inc.php';
     }
 } else {
     /**
@@ -92,7 +92,7 @@ case 'EVN':
  * Display the footer, if necessary
  */
 if ($GLOBALS['is_ajax_request'] != true) {
-    require './libraries/footer.inc.php';
+    include './libraries/footer.inc.php';
 }
 
 ?>
diff --git a/libraries/string.lib.php b/libraries/string.lib.php
index 0e9f974347..9773820268 100644
--- a/libraries/string.lib.php
+++ b/libraries/string.lib.php
@@ -24,18 +24,18 @@ if (! defined('PHPMYADMIN')) {
  */
 if (@function_exists('mb_strlen')) {
     mb_internal_encoding('utf-8');
-    require './libraries/string_mb.lib.php';
+    include './libraries/string_mb.lib.php';
 } else {
-    require './libraries/string_native.lib.php';
+    include './libraries/string_native.lib.php';
 }
 
 /**
  * Load ctype handler.
  */
 if (@extension_loaded('ctype')) {
-    require './libraries/string_type_ctype.lib.php';
+    include './libraries/string_type_ctype.lib.php';
 } else {
-    require './libraries/string_type_native.lib.php';
+    include './libraries/string_type_native.lib.php';
 }
 
 /**
diff --git a/main.php b/main.php
index 0325f08599..f85f1c011b 100644
--- a/main.php
+++ b/main.php
@@ -30,9 +30,9 @@ $common_url_query =  PMA_generate_common_url('', '');
 // when $server > 0, a server has been chosen so we can display
 // all MySQL-related information
 if ($server > 0) {
-    require './libraries/server_common.inc.php';
-    require './libraries/StorageEngine.class.php';
-    require './libraries/server_links.inc.php';
+    include './libraries/server_common.inc.php';
+    include './libraries/StorageEngine.class.php';
+    include './libraries/server_links.inc.php';
 
     // Use the verbose name of the server instead of the hostname
     // if a value is set
@@ -71,7 +71,7 @@ if ($server > 0
     if (! $cfg['LeftDisplayServers']
      && (count($cfg['Servers']) > 1 || $server == 0 && count($cfg['Servers']) == 1)) {
         echo '<li id="li_select_server">';
-        require_once './libraries/select_server.lib.php';
+        include_once './libraries/select_server.lib.php';
         PMA_select_server(true, true);
         echo '</li>';
     }
@@ -80,7 +80,7 @@ if ($server > 0
      * Displays the mysql server related links
      */
     if ($server > 0 && !PMA_DRIZZLE) {
-        require_once './libraries/check_user_privileges.lib.php';
+        include_once './libraries/check_user_privileges.lib.php';
 
         // Logout for advanced authentication
         if ($cfg['Server']['auth_type'] != 'config') {
@@ -119,7 +119,7 @@ echo '  <ul>';
 // Displays language selection combo
 if (empty($cfg['Lang'])) {
     echo '<li id="li_select_lang">';
-    require_once './libraries/display_select_lang.lib.php';
+    include_once './libraries/display_select_lang.lib.php';
     PMA_select_language();
     echo '</li>';
 }
diff --git a/schema_edit.php b/schema_edit.php
index 3662b0b161..85eeccc321 100644
--- a/schema_edit.php
+++ b/schema_edit.php
@@ -37,24 +37,24 @@ $cfgRelation = PMA_getRelationsParam();
 if (! $cfgRelation['relwork']) {
     echo sprintf(__('<b>%s</b> table not found or not set in %s'), 'relation', 'config.inc.php') . '<br />' . "\n"
          . PMA_showDocu('relation') . "\n";
-    require_once './libraries/footer.inc.php';
+    include_once './libraries/footer.inc.php';
 }
 
 if (! $cfgRelation['displaywork']) {
     echo sprintf(__('<b>%s</b> table not found or not set in %s'), 'table_info', 'config.inc.php') . '<br />' . "\n"
          . PMA_showDocu('table_info') . "\n";
-    require_once './libraries/footer.inc.php';
+    include_once './libraries/footer.inc.php';
 }
 
 if (! isset($cfgRelation['table_coords'])) {
     echo sprintf(__('<b>%s</b> table not found or not set in %s'), 'table_coords', 'config.inc.php') . '<br />' . "\n"
          . PMA_showDocu('table_coords') . "\n";
-    require_once './libraries/footer.inc.php';
+    include_once './libraries/footer.inc.php';
 }
 if (! isset($cfgRelation['pdf_pages'])) {
     echo sprintf(__('<b>%s</b> table not found or not set in %s'), 'pdf_page', 'config.inc.php') . '<br />' . "\n"
          . PMA_showDocu('pdf_pages') . "\n";
-    require_once './libraries/footer.inc.php';
+    include_once './libraries/footer.inc.php';
 }
 
 if ($cfgRelation['pdfwork']) {
@@ -64,7 +64,7 @@ if ($cfgRelation['pdfwork']) {
     * so, user can interact with it and perform export of relations schema
     */
 
-    require_once './libraries/schema/User_Schema.class.php';
+    include_once './libraries/schema/User_Schema.class.php';
     $user_schema = new PMA_User_Schema();
 
     /**
diff --git a/server_status.php b/server_status.php
index d7da7b3a75..bbac0c383a 100644
--- a/server_status.php
+++ b/server_status.php
@@ -134,7 +134,7 @@ if (isset($_REQUEST['ajax_request']) && $_REQUEST['ajax_request'] == true) {
 
                         case 'cpu':
                             if (!$sysinfo) {
-                                require_once 'libraries/sysinfo.lib.php';
+                                include_once 'libraries/sysinfo.lib.php';
                                 $sysinfo = getSysInfo();
                             }
                             if (!$cpuload) {
@@ -151,7 +151,7 @@ if (isset($_REQUEST['ajax_request']) && $_REQUEST['ajax_request'] == true) {
 
                         case 'memory':
                             if (!$sysinfo) {
-                                require_once 'libraries/sysinfo.lib.php';
+                                include_once 'libraries/sysinfo.lib.php';
                                 $sysinfo = getSysInfo();
                             }
                             if (!$memory) {
@@ -404,8 +404,8 @@ if (PMA_DRIZZLE) {
     $server_master_status = false;
     $server_slave_status = false;
 } else {
-    require './libraries/replication.inc.php';
-    require_once './libraries/replication_gui.lib.php';
+    include './libraries/replication.inc.php';
+    include_once './libraries/replication_gui.lib.php';
 }
 
 /**
diff --git a/sql.php b/sql.php
index 41d4504909..619893af8e 100644
--- a/sql.php
+++ b/sql.php
@@ -71,7 +71,7 @@ if (isset($fields['dbase'])) {
  * better place either.
  */
 if (isset($_REQUEST['get_relational_values']) && $_REQUEST['get_relational_values'] == true) {
-    require_once 'libraries/relation.lib.php';
+    include_once 'libraries/relation.lib.php';
 
     $column = $_REQUEST['column'];
     $foreigners = PMA_getForeigners($db, $table, $column);
@@ -197,7 +197,7 @@ if (isset($_REQUEST['set_col_prefs']) && $_REQUEST['set_col_prefs'] == true) {
 // Default to browse if no query set and we have table
 // (needed for browsing from DefaultTabTable)
 if (empty($sql_query) && strlen($table) && strlen($db)) {
-    require_once './libraries/bookmark.lib.php';
+    include_once './libraries/bookmark.lib.php';
     $book_sql_query = PMA_Bookmark_get($db, '\'' . PMA_sqlAddSlashes($table) . '\'',
         'label', false, true);
 
@@ -233,7 +233,7 @@ if (!defined('PMA_CHK_DROP')
  && !$cfg['AllowUserDropDatabase']
  && $is_drop_database
  && !$is_superuser) {
-    require_once './libraries/header.inc.php';
+    include_once './libraries/header.inc.php';
     PMA_mysqlDie(__('"DROP DATABASE" statements are disabled.'), '', '', $err_url);
 } // end if
 
@@ -286,7 +286,7 @@ if (isset($btnDrop) && $btnDrop == __('No')) {
             $table = '';
         }
         $active_page = $goto;
-        require './' . PMA_securePath($goto);
+        include './' . PMA_securePath($goto);
     } else {
         PMA_sendHeaderLocation($cfg['PmaAbsoluteUri'] . str_replace('&amp;', '&', $goto));
     }
@@ -315,7 +315,7 @@ if (! $cfg['Confirm'] || isset($_REQUEST['is_js_confirmed']) || isset($btnDrop)
 
 if ($do_confirm) {
     $stripped_sql_query = $sql_query;
-    require_once './libraries/header.inc.php';
+    include_once './libraries/header.inc.php';
     if ($is_drop_database) {
         echo '<h1 class="error">' . __('You are about to DESTROY a complete database!') . '</h1>';
     }
@@ -346,7 +346,7 @@ if ($do_confirm) {
     /**
      * Displays the footer and exit
      */
-    require './libraries/footer.inc.php';
+    include './libraries/footer.inc.php';
 } // end if $do_confirm
 
 
@@ -501,7 +501,7 @@ if (isset($GLOBALS['show_as_php']) || !empty($GLOBALS['validatequery'])) {
             /**
              * Go to target path.
              */
-            require './' . PMA_securePath($goto);
+            include './' . PMA_securePath($goto);
         } else {
             $full_err_url = (preg_match('@^(db|tbl)_@', $err_url))
                           ? $err_url . '&amp;show_query=1&amp;sql_query=' . urlencode($sql_query)
@@ -637,7 +637,7 @@ if (isset($GLOBALS['show_as_php']) || !empty($GLOBALS['validatequery'])) {
         /**
          * Cleanup relations.
          */
-        require_once './libraries/relation_cleanup.lib.php';
+        include_once './libraries/relation_cleanup.lib.php';
 
         if (strlen($table) && strlen($db)) {
             PMA_relationsCleanupTable($db, $table);
@@ -650,7 +650,7 @@ if (isset($GLOBALS['show_as_php']) || !empty($GLOBALS['validatequery'])) {
 
     // If a column gets dropped, do relation magic.
     if (isset($dropped_column) && strlen($db) && strlen($table) && !empty($dropped_column)) {
-        require_once './libraries/relation_cleanup.lib.php';
+        include_once './libraries/relation_cleanup.lib.php';
         PMA_relationsCleanupColumn($db, $table, $dropped_column);
 
     } // end if column was dropped
@@ -744,10 +744,10 @@ if (0 == $num_rows || $is_affected) {
         }
         // Loads to target script
         if ($goto != 'main.php') {
-            require_once './libraries/header.inc.php';
+            include_once './libraries/header.inc.php';
         }
         $active_page = $goto;
-        require './' . $goto;
+        include './' . $goto;
     } else {
         // avoid a redirect loop when last record was deleted
         if (0 == $num_rows && 'sql.php' == $cfg['DefaultTabTable']) {
@@ -802,7 +802,7 @@ else {
         unset($show_query);
     }
     if (isset($printview) && $printview == '1') {
-        require_once './libraries/header_printview.inc.php';
+        include_once './libraries/header_printview.inc.php';
     } else {
 
         $GLOBALS['js_include'][] = 'functions.js';
@@ -813,19 +813,19 @@ else {
 
         if (! $GLOBALS['is_ajax_request'] || ! $GLOBALS['cfg']['AjaxEnable']) {
             if (strlen($table)) {
-                require './libraries/tbl_common.php';
+                include './libraries/tbl_common.php';
                 $url_query .= '&amp;goto=tbl_sql.php&amp;back=tbl_sql.php';
-                require './libraries/tbl_info.inc.php';
-                require './libraries/tbl_links.inc.php';
+                include './libraries/tbl_info.inc.php';
+                include './libraries/tbl_links.inc.php';
             } elseif (strlen($db)) {
-                require './libraries/db_common.inc.php';
-                require './libraries/db_info.inc.php';
+                include './libraries/db_common.inc.php';
+                include './libraries/db_info.inc.php';
             } else {
-                require './libraries/server_common.inc.php';
-                require './libraries/server_links.inc.php';
+                include './libraries/server_common.inc.php';
+                include './libraries/server_links.inc.php';
             }
         } else {
-            require_once './libraries/header.inc.php';
+            include_once './libraries/header.inc.php';
             //we don't need to buffer the output in PMA_showMessage here.
             //set a global variable and check against it in the function
             $GLOBALS['buffer_message'] = false;
@@ -992,6 +992,6 @@ window.onload = function()
  * Displays the footer
  */
 if (! isset($_REQUEST['table_maintenance'])) {
-    require './libraries/footer.inc.php';
+    include './libraries/footer.inc.php';
 }
 ?>
diff --git a/tbl_addfield.php b/tbl_addfield.php
index a866fef7a9..50fb4226a9 100644
--- a/tbl_addfield.php
+++ b/tbl_addfield.php
@@ -163,7 +163,7 @@ if (isset($_REQUEST['do_save_data'])) {
 
     if ($result === true) {
         // If comments were sent, enable relation stuff
-        require_once './libraries/transformations.lib.php';
+        include_once './libraries/transformations.lib.php';
 
         // Update comment table for mime types [MIME]
         if (isset($_REQUEST['field_mimetype'])
@@ -191,7 +191,7 @@ if (isset($_REQUEST['do_save_data'])) {
         }
 
         $active_page = 'tbl_structure.php';
-        require './tbl_structure.php';
+        include './tbl_structure.php';
     } else {
         PMA_mysqlDie('', '', '', $err_url, false);
         // An error happened while inserting/updating a table definition.
@@ -215,21 +215,21 @@ if ($abort == false) {
     /**
      * Gets tables informations
      */
-    require_once './libraries/tbl_common.php';
-    require_once './libraries/tbl_info.inc.php';
+    include_once './libraries/tbl_common.php';
+    include_once './libraries/tbl_info.inc.php';
     /**
      * Displays top menu links
      */
     $active_page = 'tbl_structure.php';
-    require_once './libraries/tbl_links.inc.php';
+    include_once './libraries/tbl_links.inc.php';
     /**
      * Display the form
      */
     $action = 'tbl_addfield.php';
-    require_once './libraries/tbl_properties.inc.php';
+    include_once './libraries/tbl_properties.inc.php';
 
     // Diplays the footer
-    require './libraries/footer.inc.php';
+    include './libraries/footer.inc.php';
 }
 
 ?>
diff --git a/tbl_alter.php b/tbl_alter.php
index a76af5938b..dcde6019f0 100644
--- a/tbl_alter.php
+++ b/tbl_alter.php
@@ -103,7 +103,7 @@ if (isset($_REQUEST['do_save_data'])) {
         /**
          * If comments were sent, enable relation stuff
          */
-        require_once './libraries/transformations.lib.php';
+        include_once './libraries/transformations.lib.php';
 
         // updaet field names in relation
         if (isset($_REQUEST['field_orig']) && is_array($_REQUEST['field_orig'])) {
@@ -136,7 +136,7 @@ if (isset($_REQUEST['do_save_data'])) {
         }
 
         $active_page = 'tbl_structure.php';
-        require './tbl_structure.php';
+        include './tbl_structure.php';
     } else {
         PMA_mysqlDie('', '', '', $err_url, false);
         // An error happened while inserting/updating a table definition.
@@ -156,7 +156,7 @@ if (isset($_REQUEST['do_save_data'])) {
  * $selected comes from multi_submits.inc.php
  */
 if ($abort == false) {
-    require_once './libraries/tbl_links.inc.php';
+    include_once './libraries/tbl_links.inc.php';
 
     if (! isset($selected)) {
         PMA_checkParameters(array('field'));
@@ -195,7 +195,7 @@ if ($abort == false) {
     /**
      * Form for changing properties.
      */
-    require './libraries/tbl_properties.inc.php';
+    include './libraries/tbl_properties.inc.php';
 }
 
 
diff --git a/tbl_change.php b/tbl_change.php
index 7bc076747e..b64da6e9a1 100644
--- a/tbl_change.php
+++ b/tbl_change.php
@@ -21,9 +21,9 @@ require_once './libraries/db_table_exists.lib.php';
 
 // load additional configuration variables
 if (PMA_DRIZZLE) {
-    require_once './libraries/data_drizzle.inc.php';
+    include_once './libraries/data_drizzle.inc.php';
 } else {
-    require_once './libraries/data_mysql.inc.php';
+    include_once './libraries/data_mysql.inc.php';
 }
 
 /**
@@ -187,7 +187,7 @@ if (isset($where_clause)) {
             unset($rows[$key_id], $where_clause_array[$key_id]);
             PMA_showMessage(__('MySQL returned an empty result set (i.e. zero rows).'), $local_query);
             echo "\n";
-            require './libraries/footer.inc.php';
+            include './libraries/footer.inc.php';
         } else { // end if (no row returned)
             $meta = PMA_DBI_get_fields_meta($result[$key_id]);
             list($unique_condition, $tmp_clause_is_unique) = PMA_getUniqueCondition($result[$key_id], count($meta), $meta, $rows[$key_id], true);
diff --git a/tbl_chart.php b/tbl_chart.php
index 43de35144b..e396c536df 100644
--- a/tbl_chart.php
+++ b/tbl_chart.php
@@ -35,19 +35,19 @@ $GLOBALS['js_include'][] = 'canvg/canvg.js';
 if (strlen($GLOBALS['table'])) {
     $url_params['goto'] = $cfg['DefaultTabTable'];
     $url_params['back'] = 'tbl_sql.php';
-    require './libraries/tbl_common.php';
-    require './libraries/tbl_info.inc.php';
-    require './libraries/tbl_links.inc.php';
+    include './libraries/tbl_common.php';
+    include './libraries/tbl_info.inc.php';
+    include './libraries/tbl_links.inc.php';
 } elseif (strlen($GLOBALS['db'])) {
     $url_params['goto'] = $cfg['DefaultTabDatabase'];
     $url_params['back'] = 'sql.php';
-    require './libraries/db_common.inc.php';
-    require './libraries/db_info.inc.php';
+    include './libraries/db_common.inc.php';
+    include './libraries/db_info.inc.php';
 } else {
     $url_params['goto'] = $cfg['DefaultTabServer'];
     $url_params['back'] = 'sql.php';
-    require './libraries/server_common.inc.php';
-    require './libraries/server_links.inc.php';
+    include './libraries/server_common.inc.php';
+    include './libraries/server_links.inc.php';
 }
 
 /*
diff --git a/tbl_create.php b/tbl_create.php
index fb9c72fc64..e60c172450 100644
--- a/tbl_create.php
+++ b/tbl_create.php
@@ -197,7 +197,7 @@ if (isset($_REQUEST['do_save_data'])) {
     if ($result) {
 
         // If comments were sent, enable relation stuff
-        require_once './libraries/transformations.lib.php';
+        include_once './libraries/transformations.lib.php';
 
         // Update comment table for mime types [MIME]
         if (isset($_REQUEST['field_mimetype'])
@@ -314,13 +314,13 @@ if (isset($_REQUEST['do_save_data'])) {
         // read table info on this newly created table, in case
         // the next page is Structure
         $reread_info = true;
-        require './libraries/tbl_info.inc.php';
+        include './libraries/tbl_info.inc.php';
 
         // do not switch to sql.php - as there is no row to be displayed on a new table
         if ($cfg['DefaultTabTable'] === 'sql.php') {
-            require './tbl_structure.php';
+            include './tbl_structure.php';
         } else {
-            require './' . $cfg['DefaultTabTable'];
+            include './' . $cfg['DefaultTabTable'];
         }
         exit;
     } else {
diff --git a/tbl_operations.php b/tbl_operations.php
index 38ecc50f1b..b2f8ab16df 100644
--- a/tbl_operations.php
+++ b/tbl_operations.php
@@ -72,13 +72,13 @@ $table_alters = array();
  */
 if (isset($_REQUEST['submit_move']) || isset($_REQUEST['submit_copy'])) {
     $_message = '';
-    require_once './tbl_move_copy.php';
+    include_once './tbl_move_copy.php';
 }
 /**
  * If the table has to be maintained
  */
 if (isset($_REQUEST['table_maintenance'])) {
-    require_once './sql.php';
+    include_once './sql.php';
     unset($result);
 }
 /**
@@ -211,7 +211,7 @@ if ($reread_info) {
     // a change, clear the cache
     PMA_Table::$cache = array();
     $page_checksum = $checksum = $delay_key_write = 0;
-    require './libraries/tbl_info.inc.php';
+    include './libraries/tbl_info.inc.php';
 }
 unset($reread_info);
 
@@ -219,7 +219,7 @@ unset($reread_info);
  * Displays top menu links in non ajax requests
  */
 if (!isset($_REQUEST['ajax_request'])) {
-    require_once './libraries/tbl_links.inc.php';
+    include_once './libraries/tbl_links.inc.php';
 }
 if (isset($result) && empty($message_to_show)) {
     // set to success by default, because result set could be empty
diff --git a/tbl_replace.php b/tbl_replace.php
index bc9c27cf16..987fb0a779 100644
--- a/tbl_replace.php
+++ b/tbl_replace.php
@@ -45,8 +45,8 @@ $GLOBALS['js_include'][] = 'sql.js';
 if (isset($_REQUEST['insert_rows']) && is_numeric($_REQUEST['insert_rows']) && $_REQUEST['insert_rows'] != $cfg['InsertRows']) {
     $cfg['InsertRows'] = $_REQUEST['insert_rows'];
     $GLOBALS['js_include'][] = 'tbl_change.js';
-    require_once './libraries/header.inc.php';
-    require './tbl_change.php';
+    include_once './libraries/header.inc.php';
+    include './tbl_change.php';
     exit;
 }
 
@@ -227,7 +227,7 @@ foreach ($loop_array as $rownumber => $where_clause) {
 
         // Note: $key is an md5 of the fieldname. The actual fieldname is available in $me_fields_name[$key]
 
-        require './libraries/tbl_replace_fields.inc.php';
+        include './libraries/tbl_replace_fields.inc.php';
 
         // for blobstreaming
         if ($blob_streaming_active) {
@@ -344,9 +344,9 @@ if ($is_insert && count($value_sets) > 0) {
     $message = PMA_Message::success(__('No change'));
     $active_page = $goto_include;
     if (! $GLOBALS['is_ajax_request'] == true) {
-        require_once './libraries/header.inc.php';
+        include_once './libraries/header.inc.php';
     }
-    require './' . PMA_securePath($goto_include);
+    include './' . PMA_securePath($goto_include);
     exit;
 }
 unset($me_fields, $is_insertignore);
@@ -442,7 +442,7 @@ if ($GLOBALS['is_ajax_request'] == true) {
 
     if (isset($_REQUEST['rel_fields_list']) && $_REQUEST['rel_fields_list'] != '') {
         //handle relations work here for updated row.
-        require_once './libraries/relation.lib.php';
+        include_once './libraries/relation.lib.php';
 
         $map = PMA_getForeigners($db, $table, '', 'both');
 
@@ -509,7 +509,7 @@ if ($GLOBALS['is_ajax_request'] == true) {
     }
 
     if (isset($_REQUEST['do_transformations']) && $_REQUEST['do_transformations'] == true ) {
-        require_once './libraries/transformations.lib.php';
+        include_once './libraries/transformations.lib.php';
         //if some posted fields need to be transformed, generate them here.
         $mime_map = PMA_getMIME($db, $table);
 
@@ -538,7 +538,7 @@ if ($GLOBALS['is_ajax_request'] == true) {
                     if (file_exists('./libraries/transformations/' . $include_file)) {
                         $transformfunction_name = str_replace('.inc.php', '', $transformation['transformation']);
 
-                        require_once './libraries/transformations/' . $include_file;
+                        include_once './libraries/transformations/' . $include_file;
 
                         if (function_exists('PMA_transformation_' . $transformfunction_name)) {
                             $transform_function = 'PMA_transformation_' . $transformfunction_name;
diff --git a/tbl_row_action.php b/tbl_row_action.php
index 6e9dde1c57..298fe7ad53 100644
--- a/tbl_row_action.php
+++ b/tbl_row_action.php
@@ -27,8 +27,8 @@ if (! PMA_isValid($_REQUEST['rows_to_delete'], 'array')
  && ! isset($_REQUEST['mult_btn'])) {
     $disp_message = __('No rows selected');
     $disp_query = '';
-    require './sql.php';
-    require './libraries/footer.inc.php';
+    include './sql.php';
+    include './libraries/footer.inc.php';
 }
 
 if (isset($_REQUEST['submit_mult'])) {
@@ -112,7 +112,7 @@ if (!empty($submit_mult)) {
                     $original_url_query = $url_query;
                 }
             }
-            require './libraries/mult_submits.inc.php';
+            include './libraries/mult_submits.inc.php';
             $_url_params = $GLOBALS['url_params'];
             $_url_params['goto'] = 'tbl_sql.php';
             $url_query = PMA_generate_common_url($_url_params);
@@ -140,12 +140,12 @@ if (!empty($submit_mult)) {
             unset($submit_mult, $_REQUEST['mult_btn']);
 
             $active_page = 'sql.php';
-            require './sql.php';
+            include './sql.php';
 
             /**
              * Displays the footer
              */
-            require './libraries/footer.inc.php';
+            include './libraries/footer.inc.php';
             break;
     }
 }
diff --git a/tbl_select.php b/tbl_select.php
index 19ec4e4b5b..8bb3b0e6cd 100644
--- a/tbl_select.php
+++ b/tbl_select.php
@@ -33,19 +33,19 @@ $geom_types = PMA_getGISDatatypes();
  */
 if (! isset($param) || $param[0] == '') {
     // Gets some core libraries
-    require_once './libraries/tbl_common.php';
+    include_once './libraries/tbl_common.php';
     //$err_url   = 'tbl_select.php' . $err_url;
     $url_query .= '&amp;goto=tbl_select.php&amp;back=tbl_select.php';
 
     /**
      * Gets tables informations
      */
-    require_once './libraries/tbl_info.inc.php';
+    include_once './libraries/tbl_info.inc.php';
 
     /**
      * Displays top menu links
      */
-    require_once './libraries/tbl_links.inc.php';
+    include_once './libraries/tbl_links.inc.php';
 
     if (! isset($goto)) {
         $goto = $GLOBALS['cfg']['DefaultTabTable'];
@@ -237,7 +237,7 @@ echo PMA_generate_html_tabs(PMA_tbl_getSubTabs(), $url_params, '', 'topmenu2');
 </form>
 <div id="sqlqueryresults"></div>
     <?php
-    require './libraries/footer.inc.php';
+    include './libraries/footer.inc.php';
 ?>
 
 </fieldset>
@@ -295,7 +295,7 @@ echo PMA_generate_html_tabs(PMA_tbl_getSubTabs(), $url_params, '', 'topmenu2');
     if ($orderField != '--nil--') {
         $sql_query .= ' ORDER BY ' . PMA_backquote($orderField) . ' ' . $order;
     } // end if
-    require './sql.php';
+    include './sql.php';
 }
 
 ?>
diff --git a/tbl_structure.php b/tbl_structure.php
index a0bec5dd4d..79e6f05947 100644
--- a/tbl_structure.php
+++ b/tbl_structure.php
@@ -62,13 +62,13 @@ if (! empty($submit_mult) && isset($_REQUEST['selected_fld'])) {
         // what is this htmlspecialchars() for??
         //$sql_query .= ' FROM ' . PMA_backquote(htmlspecialchars($table));
         $sql_query .= ' FROM ' . PMA_backquote($db) . '.' . PMA_backquote($table);
-        require './sql.php';
+        include './sql.php';
         exit;
     } else {
         // handle multiple field commands
         // handle confirmation of deleting multiple fields/columns
         $action = 'tbl_structure.php';
-        require './libraries/mult_submits.inc.php';
+        include './libraries/mult_submits.inc.php';
         //require_once './libraries/header.inc.php';
         //require_once './libraries/tbl_links.inc.php';
 
@@ -224,7 +224,7 @@ $comments_map = array();
 $mime_map = array();
 
 if ($GLOBALS['cfg']['ShowPropertyComments']) {
-    require_once './libraries/transformations.lib.php';
+    include_once './libraries/transformations.lib.php';
 
     //$cfgRelation = PMA_getRelationsParam();
 
@@ -681,7 +681,7 @@ if (! $tbl_is_view && ! $db_is_information_schema) {
  * links again
  */
 if (count($fields) > 20) {
-    require './libraries/tbl_links.inc.php';
+    include './libraries/tbl_links.inc.php';
 } // end if (count($fields) > 20)
 
 /**
diff --git a/user_password.php b/user_password.php
index 3ca344247e..d5859b811d 100644
--- a/user_password.php
+++ b/user_password.php
@@ -30,9 +30,9 @@ if (!$cfg['ShowChgPassword']) {
     $cfg['ShowChgPassword'] = PMA_DBI_select_db('mysql');
 }
 if ($cfg['Server']['auth_type'] == 'config' || !$cfg['ShowChgPassword']) {
-    require_once './libraries/header.inc.php';
+    include_once './libraries/header.inc.php';
     PMA_Message::error(__('You don\'t have sufficient privileges to be here right now!'))->display();
-    require './libraries/footer.inc.php';
+    include './libraries/footer.inc.php';
 } // end if
 
 
@@ -101,14 +101,14 @@ if (isset($_REQUEST['nopass'])) {
         }
 
         // Displays the page
-        require_once './libraries/header.inc.php';
+        include_once './libraries/header.inc.php';
         echo '<h1>' . __('Change password') . '</h1>' . "\n\n";
         PMA_showMessage($message, $sql_query, 'success');
         ?>
         <a href="index.php<?php echo PMA_generate_common_url($_url_params); ?>" target="_parent">
             <strong><?php echo __('Back'); ?></strong></a>
         <?php
-        require './libraries/footer.inc.php';
+        include './libraries/footer.inc.php';
     } // end if
 } // end if