diff --git a/ChangeLog b/ChangeLog
index 247b48ee4..55c27d87f 100755
--- a/ChangeLog
+++ b/ChangeLog
@@ -5,6 +5,11 @@ phpMyAdmin - Changelog
 $Id$
 $Source$
 
+2002-08-20 Alexander M. Turek  <rabus@users.sourceforge.net>
+    * sql.php3, libraries/sqlparser.lib.php3: Fixed bug #597184 (PHP3
+      compatibility).
+    * libraries/common.lib.php3: Undefined variable.
+
 2002-08-17 Alexander M. Turek  <rabus@users.sourceforge.net>
     * main.php3: Fixed bug #596019 (Undefined variable $re).
 
diff --git a/libraries/common.lib.php3 b/libraries/common.lib.php3
index 58830a13e..748d93309 100644
--- a/libraries/common.lib.php3
+++ b/libraries/common.lib.php3
@@ -1086,6 +1086,7 @@ if (typeof(document.getElementById) != 'undefined'
 
         // Checks if the table needs to be repaired after a TRUNCATE query.
         if (PMA_MYSQL_INT_VERSION >= 40000
+            && isset($GLOBALS['table'])
             && $GLOBALS['sql_query'] == 'TRUNCATE TABLE ' . PMA_backquote($GLOBALS['table'])) {
             if (!isset($tbl_status)) {
                 $result = @PMA_mysql_query('SHOW TABLE STATUS FROM ' . PMA_backquote($GLOBALS['db']) . ' LIKE \'' . PMA_sqlAddslashes($GLOBALS['table'], TRUE) . '\'');
diff --git a/libraries/sqlparser.lib.php3 b/libraries/sqlparser.lib.php3
index 252991eb2..3a64199b8 100644
--- a/libraries/sqlparser.lib.php3
+++ b/libraries/sqlparser.lib.php3
@@ -196,7 +196,7 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
             9 => '||'
         );
         $allpunct_list_pair_size = 10; //count($allpunct_list_pair);
-        $quote_list              = "\'\"\`";
+        $quote_list              = '\'"`';
         $arraysize               = 0;
 
         while ($count2 < $len) {
@@ -382,7 +382,7 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
                         $count2--;
                         $punct_data = substr($sql, $count1, $count2 - $count1);
                     } else {
-                        $debugstr =  $GLOBALS['strSQPBugUnknownPunctuation'] . ' @ ' . ($count1+1) . "\n" 
+                        $debugstr =  $GLOBALS['strSQPBugUnknownPunctuation'] . ' @ ' . ($count1+1) . "\n"
                                   . 'STR: ' . $punct_data;
                         PMA_SQP_throwError($debugstr, $sql);
                         return $sql;
@@ -418,7 +418,7 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
                             $is_float_digit = TRUE;
                             continue;
                         } else {
-                            $debugstr = $GLOBALS['strSQPBugInvalidIdentifer'] . ' @ ' . ($count1+1) . "\n" 
+                            $debugstr = $GLOBALS['strSQPBugInvalidIdentifer'] . ' @ ' . ($count1+1) . "\n"
                                       . 'STR: ' . substr($sql, $count1, $count2 - $count1);
                             PMA_SQP_throwError($debugstr, $sql);
                             return $sql;
@@ -485,8 +485,8 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
 
         if ($arraysize > 0) {
             $t_next     = $sql_array[0]['type'];
-            $t_prev     = NULL;
-            $t_cur      = NULL;
+            $t_prev     = '';
+            $t_cur      = '';
         }
 
         for ($i = 0; $i < $arraysize; $i++) {
@@ -495,7 +495,7 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
             if (($i + 1) < $arraysize) {
                 $t_next = $sql_array[$i + 1]['type'];
             } else {
-                $t_next = NULL;
+                $t_next = '';
             }
             if ($t_cur == 'alpha') {
                 $t_suffix     = '_identifier';
@@ -702,9 +702,9 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
         $arraysize = $arr['len'];
         $typearr   = array();
         if ($arraysize >= 0) {
-            $typearr[0] = NULL;
-            $typearr[1] = NULL;
-            $typearr[2] = NULL;
+            $typearr[0] = '';
+            $typearr[1] = '';
+            $typearr[2] = '';
             $typearr[3] = $arr[0]['type'];
         }
 
@@ -724,7 +724,7 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
                 $typearr[4] = $arr[$i + 1]['type'];
             } else {
                 //array_push($typearr, NULL);
-                $typearr[4] = NULL;
+                $typearr[4] = '';
             }
 
             for ($j=0; $j<4; $j++) {
diff --git a/sql.php3 b/sql.php3
index 7d1052693..23e92d417 100755
--- a/sql.php3
+++ b/sql.php3
@@ -562,7 +562,7 @@ else {
                            . '&amp;disp_direction=' . $disp_direction
                            . '&amp;repeat_cells=' . $repeat_cells
                            . '&amp;printview=1'
-                           . (($dontlimitchars == '1') ? '&amp;dontlimitchars=1' : '')
+                           . ((isset($dontlimitchars) && $dontlimitchars == '1') ? '&amp;dontlimitchars=1' : '')
                            . '&amp;sql_query=' . urlencode($sql_query);
                 echo '    <!-- Print view -->' . "\n"
                    . '    <a href="sql.php3' . $url_query . '" target="print_view">' . $strPrintView . '</a>' . "\n";