install/convert_database_charset.php

   1 <?php
   2 /*=====================================================================*\
   3 || ###################################################################
   4 || # Bugdar
   5 || # Copyright (c)2004-2008 Blue Static
   6 || #
   7 || # This program is free software; you can redistribute it and/or modify
   8 || # it under the terms of the GNU General Public License as published by
   9 || # the Free Software Foundation; version 2 of the License.
  10 || #
  11 || # This program is distributed in the hope that it will be useful, but
  12 || # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13 || # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  14 || # more details.
  15 || #
  16 || # You should have received a copy of the GNU General Public License along
  17 || # with this program; if not, write to the Free Software Foundation, Inc.,
  18 || # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  19 || ###################################################################
  20 \*=====================================================================*/
  21
  22
  23 chdir('../admin/');
  24 require_once('./global.php');
  25
  26 define('ISSO_PRINTER_NO_NAVIGATION', 1);
  27
  28 // you can change what you want to conver to here
  29 define('TARGET', 'utf8_general_ci');
  30
  31 $input->inputClean('step', TYPE_UINT);
  32
  33 // columns to convert per table
  34 $columnConversions = array();
  35
  36 // primary keys that are text
  37 $primaryKeys = array();
  38
  39 // fulltext
  40 $fulltext = array();
  41
  42 // ###################################################################
  43
  44 function PrintContinue($step)
  45 {
  46         global $admin;
  47
  48         $admin->form_start('convert_database_charset.php', 'convert');
  49         $admin->form_hidden_field('step', $step);
  50         echo "\n<input type=\"submit\" value=\"  Continue &#8594;  \" name=\"__submit__\" />";
  51         $admin->form_end();
  52 }
  53
  54 $admin->page_start('Convert Database Character Set');
  55
  56 // ###################################################################
  57
  58 if ($input->in['step'] == 0)
  59 {
  60         $collation = $db->queryFirst("SHOW VARIABLES LIKE 'collation_database'");
  61
  62         echo '<h1>Convert Database Character Set</h1>';
  63         echo '<p>Earlier versions of Bugdar did not check or enforce the MySQL database character set or collation. It is recommended that the database be set at <strong>' . TARGET . '</strong>. This script can migrate all of data from your current character set/collation of <strong>' . $collation['Value'] . '</strong>. If you would like to convert your database to utf8, please click the link below.</p>';
  64
  65         echo '<h3>Please back up your database before continuing! While this script is tested and should be safe, it is better to be cautious.</h3>';
  66
  67         PrintContinue(1);
  68 }
  69
  70 // ###################################################################
  71
  72 else if ($input->in['step'] == 1)
  73 {
  74         echo '<h1>Preserve Existing Data</h1>';
  75         echo '<p>This converts all the table columns that are stored with a character set to a BLOB type to ensure there are no problems with the target character set.</p>';
  76
  77         $admin->table_start();
  78         $admin->table_head('Column Preservation');
  79         $admin->table_column_head(array('Table', 'Column'));
  80
  81         // get rid of indices that are strings
  82         $db->showerrors = false;
  83         $db->query("ALTER TABLE " . TABLE_PREFIX . "bug DROP INDEX summary");
  84         $db->query("ALTER TABLE " . TABLE_PREFIX . "comment DROP INDEX comment");
  85         $db->query("ALTER TABLE " . TABLE_PREFIX . "language DROP INDEX languagecode");
  86         $db->query("ALTER TABLE " . TABLE_PREFIX . "language DROP INDEX langcode");
  87         $db->showerrors = true;
  88
  89         $tables = $db->query("SHOW TABLES");
  90         while ($table = $db->fetch_array($tables, false))
  91         {
  92                 $columns = $db->query("SHOW FULL COLUMNS FROM $table[0]");
  93                 foreach ($columns as $col)
  94                 {
  95                         if (!is_null($col['Collation']) AND (strpos($col['Type'], 'char') !== false OR strpos($col['Type'], 'text') !== false))
  96                         {
  97                                 $columnConversions[$table[0]][$col['Field']] = $col['Type'];
  98                                 if ($col['Key'] == 'PRI')
  99                                 {
 100                                         $db->query("ALTER TABLE $table[0] DROP PRIMARY KEY");
 101                                         $primaryKeys[$table[0]] = $col['Field'];
 102                                 }
 103                                 $db->query("ALTER TABLE $table[0] MODIFY $col[Field] BLOB");
 104                                 $admin->row_text($table[0], $col['Field']);
 105                         }
 106                 }
 107         }
 108
 109         $admin->table_end();
 110
 111         echo '<h1>Convert Database Character Set</h1>';
 112         echo '<p>This step changes the database\'s character set.</p>';
 113
 114         require './includes/config.php';
 115         $db->query("ALTER DATABASE $database COLLATE " . TARGET);
 116
 117         echo '<h1>Convert Table Character Set</h1>';
 118         echo '<p>This converts each table\'s character set and collation.</p>';
 119
 120         $admin->table_start();
 121         $admin->table_head('Table Conversion');
 122         $admin->table_column_head(array('Table Name', 'Result'));
 123
 124         $tables = $db->query("SHOW TABLES");
 125         while ($table = $db->fetch_array($tables, false))
 126         {
 127                 $db->query("ALTER TABLE $table[0] COLLATE " . TARGET);
 128                 $admin->row_text($table[0], 'Good');
 129         }
 130
 131         $admin->table_end();
 132
 133         echo '<h1>Convert Table Columns</h1>';
 134         echo '<p>This converts all the table columns that are stored with a character set.</p>';
 135
 136         $admin->table_start();
 137         $admin->table_head('Column Conversion');
 138         $admin->table_column_head(array('Table', 'Column'));
 139
 140         foreach ($columnConversions AS $table => $columns)
 141         {
 142                 foreach ($columns AS $column => $type)
 143                 {
 144                         $db->query("ALTER TABLE $table MODIFY $column $type COLLATE " . TARGET);
 145                         $admin->row_text($table, $column);
 146                 }
 147         }
 148
 149         foreach ($primaryKeys AS $table => $field)
 150         {
 151                 $db->query("ALTER TABLE $table ADD PRIMARY KEY ($field)");
 152         }
 153
 154         $db->query("ALTER TABLE " . TABLE_PREFIX . "bug ADD FULLTEXT(summary)");
 155         $db->query("ALTER TABLE " . TABLE_PREFIX . "comment ADD FULLTEXT(comment)");
 156         $db->query("ALTER TABLE " . TABLE_PREFIX . "language ADD UNIQUE(langcode)");
 157
 158         $admin->table_end();
 159
 160         PrintContinue(2);
 161 }
 162
 163 // ###################################################################
 164
 165 else if ($input->in['step'] == 2)
 166 {
 167         echo '<h1>Conversion Complete</h1>';
 168         echo '<p>Your database has now been converted to the <strong>' . TARGET . '</strong> collation. Congratulations. Please check that everything is operating correctly.</p>';
 169 }
 170
 171 // ###################################################################
 172
 173 $admin->page_end();
 174
 175 ?>