phpmyadmin/libraries/dbi/dummy.lib.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Fake database driver for testing purposes
   5  *
   6  * It has hardcoded results for given queries what makes easy to use it
   7  * in testsuite. Feel free to include other queries which your test will
   8  * need.
   9  *
  10  * @package    PhpMyAdmin-DBI
  11  * @subpackage Dummy
  12  */
  13 if (! defined('PHPMYADMIN')) {
  14     exit;
  15 }
  16
  17 /**
  18  * Array of queries this "driver" supports
  19  */
  20 $GLOBALS['dummy_queries'] = array(
  21     array('query' => 'SELECT 1', 'result' => array(array('1'))),
  22     array(
  23         'query' => 'SELECT CURRENT_USER();',
  24         'result' => array(array('pma_test@localhost')),
  25     ),
  26     array(
  27         'query' => 'SELECT COUNT(*) FROM mysql.user',
  28         'result' => false,
  29     ),
  30     array(
  31         'query' => 'SHOW MASTER LOGS',
  32         'result' => false,
  33     ),
  34     array(
  35         'query' => 'SHOW STORAGE ENGINES',
  36         'result' => array(
  37             array('Engine' => 'dummy', 'Support' => 'YES', 'Comment' => 'dummy comment'),
  38             array('Engine' => 'dummy2', 'Support' => 'NO', 'Comment' => 'dummy2 comment'),
  39         )
  40     ),
  41     array(
  42         'query' => 'SHOW STATUS WHERE Variable_name LIKE \'Innodb\\_buffer\\_pool\\_%\' OR Variable_name = \'Innodb_page_size\';',
  43         'result' => array(
  44             array('Innodb_buffer_pool_pages_data', 0),
  45             array('Innodb_buffer_pool_pages_dirty', 0),
  46             array('Innodb_buffer_pool_pages_flushed', 0),
  47             array('Innodb_buffer_pool_pages_free', 0),
  48             array('Innodb_buffer_pool_pages_misc', 0),
  49             array('Innodb_buffer_pool_pages_total', 4096),
  50             array('Innodb_buffer_pool_read_ahead_rnd', 0),
  51             array('Innodb_buffer_pool_read_ahead', 0),
  52             array('Innodb_buffer_pool_read_ahead_evicted', 0),
  53             array('Innodb_buffer_pool_read_requests', 64),
  54             array('Innodb_buffer_pool_reads', 32),
  55             array('Innodb_buffer_pool_wait_free', 0),
  56             array('Innodb_buffer_pool_write_requests', 64),
  57             array('Innodb_page_size', 16384),
  58         )
  59     ),
  60     array(
  61         'query' => 'SHOW INNODB STATUS;',
  62         'result' => false,
  63     ),
  64     array(
  65         'query' => 'SELECT @@innodb_version;',
  66         'result' => array(
  67             array('1.1.8'),
  68         )
  69     ),
  70     array(
  71         'query' => 'SHOW GLOBAL VARIABLES LIKE \'innodb_file_per_table\';',
  72         'result' => array(
  73             array('innodb_file_per_table', 'OFF'),
  74         )
  75     ),
  76     array(
  77         'query' => 'SHOW GLOBAL VARIABLES LIKE \'innodb_file_format\';',
  78         'result' => array(
  79             array('innodb_file_format', 'Antelope'),
  80         )
  81     ),
  82     array(
  83         'query' => 'SHOW VARIABLES LIKE \'collation_server\'',
  84         'result' => array(
  85             array('collation_server', 'utf8_general_ci'),
  86         )
  87     ),
  88     array(
  89         'query' => 'SHOW VARIABLES LIKE \'language\';',
  90         'result' => array(),
  91     ),
  92     array(
  93         'query' => 'SHOW TABLES FROM `pma_test`;',
  94         'result' => array(
  95             array('table1'),
  96             array('table2'),
  97         )
  98     ),
  99     array(
 100         'query' => 'SHOW TABLES FROM `pmadb`',
 101         'result' => array(
 102             array('column_info'),
 103         )
 104     ),
 105     array(
 106         'query' => 'SHOW COLUMNS FROM `pma_test`.`table1`',
 107         'columns' => array(
 108             'Field', 'Type', 'Null', 'Key', 'Default', 'Extra'
 109         ),
 110         'result' => array(
 111             array('i', 'int(11)', 'NO', 'PRI', 'NULL', 'auto_increment'),
 112             array('o', 'int(11)', 'NO', 'MUL', 'NULL', ''),
 113         )
 114     ),
 115     array(
 116         'query' => 'SHOW INDEXES FROM `pma_test`.`table1` WHERE (Non_unique = 0)',
 117         'result' => array(),
 118     ),
 119     array(
 120         'query' => 'SHOW COLUMNS FROM `pma_test`.`table2`',
 121         'columns' => array(
 122             'Field', 'Type', 'Null', 'Key', 'Default', 'Extra'
 123         ),
 124         'result' => array(
 125             array('i', 'int(11)', 'NO', 'PRI', 'NULL', 'auto_increment'),
 126             array('o', 'int(11)', 'NO', 'MUL', 'NULL', ''),
 127         )
 128     ),
 129     array(
 130         'query' => 'SHOW INDEXES FROM `pma_test`.`table1`',
 131         'result' => array(),
 132     ),
 133     array(
 134         'query' => 'SHOW INDEXES FROM `pma_test`.`table2`',
 135         'result' => array(),
 136     ),
 137     array(
 138         'query' => 'SHOW COLUMNS FROM `pma`.`table1`',
 139         'columns' => array(
 140             'Field', 'Type', 'Null', 'Key', 'Default', 'Extra', 'Privileges', 'Comment'
 141         ),
 142         'result' => array(
 143             array('i', 'int(11)', 'NO', 'PRI', 'NULL', 'auto_increment', 'select,insert,update,references', ''),
 144             array('o', 'varchar(100)', 'NO', 'MUL', 'NULL', '', 'select,insert,update,references', ''),
 145         )
 146     ),
 147     array(
 148         'query' => 'SELECT * FROM information_schema.CHARACTER_SETS',
 149         'columns' => array('CHARACTER_SET_NAME', 'DEFAULT_COLLATE_NAME', 'DESCRIPTION', 'MAXLEN'),
 150         'result' => array(
 151             array('utf8', 'utf8_general_ci', 'UTF-8 Unicode', 3),
 152         )
 153     ),
 154     array(
 155         'query' => 'SELECT * FROM information_schema.COLLATIONS',
 156         'columns' => array(
 157             'COLLATION_NAME', 'CHARACTER_SET_NAME', 'ID', 'IS_DEFAULT', 'IS_COMPILED', 'SORTLEN'
 158         ),
 159         'result' => array(
 160             array('utf8_general_ci', 'utf8', 33, 'Yes', 'Yes', 1),
 161             array('utf8_bin', 'utf8', 83, '', 'Yes', 1),
 162         )
 163     ),
 164     array(
 165         'query' => 'SELECT `TABLE_NAME` FROM `INFORMATION_SCHEMA`.`TABLES` WHERE `TABLE_SCHEMA`=\'pma_test\' AND `TABLE_TYPE`=\'BASE TABLE\'',
 166         'result' => array(),
 167     ),
 168     array(
 169         'query' => 'SELECT upper(plugin_name) f FROM data_dictionary.plugins WHERE plugin_name IN (\'MYSQL_PASSWORD\',\'ROT13\') AND plugin_type = \'Function\' AND is_active',
 170         'columns' => array('f'),
 171         'result' => array(array('ROT13')),
 172     ),
 173     array(
 174         'query' => 'SELECT `column_name`, `mimetype`, `transformation`, `transformation_options` FROM `pmadb`.`column_info` WHERE `db_name` = \'pma_test\' AND `table_name` = \'table1\' AND ( `mimetype` != \'\' OR `transformation` != \'\' OR `transformation_options` != \'\')',
 175         'columns' => array('column_name', 'mimetype', 'transformation', 'transformation_options'),
 176         'result' => array(
 177             array('o', 'text/plain', 'sql'),
 178         )
 179     ),
 180     array(
 181         'query' => 'SELECT TABLE_NAME FROM information_schema.VIEWS WHERE TABLE_SCHEMA = \'pma_test\' AND TABLE_NAME = \'table1\'',
 182         'result' => array(),
 183     ),
 184     array(
 185         'query' => 'SELECT *, `TABLE_SCHEMA` AS `Db`, `TABLE_NAME` AS `Name`, `TABLE_TYPE` AS `TABLE_TYPE`, `ENGINE` AS `Engine`, `ENGINE` AS `Type`, `VERSION` AS `Version`, `ROW_FORMAT` AS `Row_format`, `TABLE_ROWS` AS `Rows`, `AVG_ROW_LENGTH` AS `Avg_row_length`, `DATA_LENGTH` AS `Data_length`, `MAX_DATA_LENGTH` AS `Max_data_length`, `INDEX_LENGTH` AS `Index_length`, `DATA_FREE` AS `Data_free`, `AUTO_INCREMENT` AS `Auto_increment`, `CREATE_TIME` AS `Create_time`, `UPDATE_TIME` AS `Update_time`, `CHECK_TIME` AS `Check_time`, `TABLE_COLLATION` AS `Collation`, `CHECKSUM` AS `Checksum`, `CREATE_OPTIONS` AS `Create_options`, `TABLE_COMMENT` AS `Comment` FROM `information_schema`.`TABLES` t WHERE BINARY `TABLE_SCHEMA` IN (\'pma_test\') AND t.`TABLE_NAME` = \'table1\' ORDER BY Name ASC',
 186         'columns' => array('TABLE_CATALOG', 'TABLE_SCHEMA', 'TABLE_NAME', 'TABLE_TYPE', 'ENGINE', 'VERSION', 'ROW_FORMAT', 'TABLE_ROWS', 'AVG_ROW_LENGTH', 'DATA_LENGTH', 'MAX_DATA_LENGTH', 'INDEX_LENGTH', 'DATA_FREE', 'AUTO_INCREMENT', 'CREATE_TIME', 'UPDATE_TIME', 'CHECK_TIME', 'TABLE_COLLATION', 'CHECKSUM', 'CREATE_OPTIONS', 'TABLE_COMMENT', 'Db', 'Name', 'TABLE_TYPE', 'Engine', 'Type', 'Version', 'Row_format', 'Rows', 'Avg_row_length', 'Data_length', 'Max_data_length', 'Index_length', 'Data_free', 'Auto_increment', 'Create_time', 'Update_time', 'Check_time', 'Collation', 'Checksum', 'Create_options', 'Comment'),
 187         'result' => array(
 188             array('def', 'smash', 'issues_issue', 'BASE TABLE', 'InnoDB', '10', 'Compact', '9136', '862', '7880704', '0', '1032192', '420478976', '155862', '2012-08-29 13:28:28', 'NULL', 'NULL', 'utf8_general_ci', 'NULL', '', '', 'smash', 'issues_issue', 'BASE TABLE', 'InnoDB', 'InnoDB', '10', 'Compact', '9136', '862', '7880704', '0', '1032192', '420478976', '155862', '2012-08-29 13:28:28', 'NULL', 'NULL', 'utf8_general_ci', 'NULL'),
 189         ),
 190     ),
 191     array(
 192         'query' => 'SELECT *, `TABLE_SCHEMA` AS `Db`, `TABLE_NAME` AS `Name`, `TABLE_TYPE` AS `TABLE_TYPE`, `ENGINE` AS `Engine`, `ENGINE` AS `Type`, `VERSION` AS `Version`, `ROW_FORMAT` AS `Row_format`, `TABLE_ROWS` AS `Rows`, `AVG_ROW_LENGTH` AS `Avg_row_length`, `DATA_LENGTH` AS `Data_length`, `MAX_DATA_LENGTH` AS `Max_data_length`, `INDEX_LENGTH` AS `Index_length`, `DATA_FREE` AS `Data_free`, `AUTO_INCREMENT` AS `Auto_increment`, `CREATE_TIME` AS `Create_time`, `UPDATE_TIME` AS `Update_time`, `CHECK_TIME` AS `Check_time`, `TABLE_COLLATION` AS `Collation`, `CHECKSUM` AS `Checksum`, `CREATE_OPTIONS` AS `Create_options`, `TABLE_COMMENT` AS `Comment` FROM `information_schema`.`TABLES` t WHERE `TABLE_SCHEMA` IN (\'pma_test\') AND t.`TABLE_NAME` = \'table1\' ORDER BY Name ASC',
 193         'columns' => array('TABLE_CATALOG', 'TABLE_SCHEMA', 'TABLE_NAME', 'TABLE_TYPE', 'ENGINE', 'VERSION', 'ROW_FORMAT', 'TABLE_ROWS', 'AVG_ROW_LENGTH', 'DATA_LENGTH', 'MAX_DATA_LENGTH', 'INDEX_LENGTH', 'DATA_FREE', 'AUTO_INCREMENT', 'CREATE_TIME', 'UPDATE_TIME', 'CHECK_TIME', 'TABLE_COLLATION', 'CHECKSUM', 'CREATE_OPTIONS', 'TABLE_COMMENT', 'Db', 'Name', 'TABLE_TYPE', 'Engine', 'Type', 'Version', 'Row_format', 'Rows', 'Avg_row_length', 'Data_length', 'Max_data_length', 'Index_length', 'Data_free', 'Auto_increment', 'Create_time', 'Update_time', 'Check_time', 'Collation', 'Checksum', 'Create_options', 'Comment'),
 194         'result' => array(
 195             array('def', 'smash', 'issues_issue', 'BASE TABLE', 'InnoDB', '10', 'Compact', '9136', '862', '7880704', '0', '1032192', '420478976', '155862', '2012-08-29 13:28:28', 'NULL', 'NULL', 'utf8_general_ci', 'NULL', '', '', 'smash', 'issues_issue', 'BASE TABLE', 'InnoDB', 'InnoDB', '10', 'Compact', '9136', '862', '7880704', '0', '1032192', '420478976', '155862', '2012-08-29 13:28:28', 'NULL', 'NULL', 'utf8_general_ci', 'NULL'),
 196         ),
 197     ),
 198     array(
 199         'query' => 'SELECT COUNT(*) FROM `pma_test`.`table1`',
 200         'result' => array(array(0)),
 201     ),
 202     array(
 203         'query' => 'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`USER_PRIVILEGES` WHERE GRANTEE=\'\'\'pma_test\'\'@\'\'localhost\'\'\' AND PRIVILEGE_TYPE=\'TRIGGER\'',
 204         'result' => array(),
 205     ),
 206     array(
 207         'query' => 'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`SCHEMA_PRIVILEGES` WHERE GRANTEE=\'\'\'pma_test\'\'@\'\'localhost\'\'\' AND PRIVILEGE_TYPE=\'TRIGGER\' AND TABLE_SCHEMA=\'pma\\\\_test\'',
 208
 209         'result' => array(),
 210     ),
 211     array(
 212         'query' => 'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`TABLE_PRIVILEGES` WHERE GRANTEE=\'\'\'pma_test\'\'@\'\'localhost\'\'\' AND PRIVILEGE_TYPE=\'TRIGGER\' AND TABLE_SCHEMA=\'pma\\\\_test\' AND TABLE_NAME=\'table1\'',
 213         'result' => array(),
 214     ),
 215     array(
 216         'query' => 'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`USER_PRIVILEGES` WHERE GRANTEE=\'\'\'pma_test\'\'@\'\'localhost\'\'\' AND PRIVILEGE_TYPE=\'EVENT\'',
 217         'result' => array(),
 218     ),
 219     array(
 220         'query' => 'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`SCHEMA_PRIVILEGES` WHERE GRANTEE=\'\'\'pma_test\'\'@\'\'localhost\'\'\' AND PRIVILEGE_TYPE=\'EVENT\' AND TABLE_SCHEMA=\'pma\\\\_test\'',
 221
 222         'result' => array(),
 223     ),
 224     array(
 225         'query' => 'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`TABLE_PRIVILEGES` WHERE GRANTEE=\'\'\'pma_test\'\'@\'\'localhost\'\'\' AND PRIVILEGE_TYPE=\'EVENT\' AND TABLE_SCHEMA=\'pma\\\\_test\' AND TABLE_NAME=\'table1\'',
 226         'result' => array(),
 227     ),
 228     array(
 229         'query' => 'RENAME TABLE `pma_test`.`table1` TO `pma_test`.`table3`;',
 230         'result' => array(),
 231     ),
 232     array(
 233         'query' => 'SELECT TRIGGER_SCHEMA, TRIGGER_NAME, EVENT_MANIPULATION, EVENT_OBJECT_TABLE, ACTION_TIMING, ACTION_STATEMENT, EVENT_OBJECT_SCHEMA, EVENT_OBJECT_TABLE, DEFINER FROM information_schema.TRIGGERS WHERE TRIGGER_SCHEMA= \'pma_test\' AND EVENT_OBJECT_TABLE = \'table1\';',
 234         'result' => array(),
 235     ),
 236     array(
 237         'query' => 'SHOW TABLES FROM `pma`;',
 238         'result' => array(),
 239     ),
 240     array(
 241         'query' => "SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`SCHEMA_PRIVILEGES` WHERE GRANTEE='''pma_test''@''localhost''' AND PRIVILEGE_TYPE='EVENT' AND TABLE_SCHEMA='pma'",
 242         'result' => array(),
 243     ),
 244     array(
 245         'query' => "SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`SCHEMA_PRIVILEGES` WHERE GRANTEE='''pma_test''@''localhost''' AND PRIVILEGE_TYPE='TRIGGER' AND TABLE_SCHEMA='pma'",
 246         'result' => array(),
 247     ),
 248
 249 );
 250 /**
 251  * Current database.
 252  */
 253 $GLOBALS['dummy_db'] = '';
 254
 255 /* Some basic setup for dummy driver */
 256 $GLOBALS['userlink'] = 1;
 257 $GLOBALS['controllink'] = 2;
 258 $GLOBALS['cfg']['DBG']['sql'] = false;
 259 if (! defined('PMA_DRIZZLE')) {
 260     define('PMA_DRIZZLE', 0);
 261 }
 262
 263
 264 /**
 265  * Run the multi query and output the results
 266  *
 267  * @param mysqli $link  mysqli object
 268  * @param string $query multi query statement to execute
 269  *
 270  * @return boolean false always false since mysql extention not support
 271  *                       for multi query executions
 272  */
 273 function PMA_DBI_real_multi_query($link, $query)
 274 {
 275     return false;
 276 }
 277
 278 /**
 279  * connects to the database server
 280  *
 281  * @param string $user                 mysql user name
 282  * @param string $password             mysql user password
 283  * @param bool   $is_controluser       whether this is a control user connection
 284  * @param array  $server               host/port/socket/persistent
 285  * @param bool   $auxiliary_connection (when true, don't go back to login if
 286  *                                     connection fails)
 287  *
 288  * @return mixed false on error or a mysqli object on success
 289  */
 290 function PMA_DBI_connect(
 291     $user, $password, $is_controluser = false, $server = null,
 292     $auxiliary_connection = false
 293 ) {
 294     return true;
 295 }
 296
 297 /**
 298  * selects given database
 299  *
 300  * @param string   $dbname name of db to select
 301  * @param resource $link   mysql link resource
 302  *
 303  * @return bool
 304  */
 305 function PMA_DBI_select_db($dbname, $link = null)
 306 {
 307     $GLOBALS['dummy_db'] = $dbname;
 308     return true;
 309 }
 310
 311 /**
 312  * runs a query and returns the result
 313  *
 314  * @param string   $query   query to run
 315  * @param resource $link    mysql link resource
 316  * @param int      $options query options
 317  *
 318  * @return mixed
 319  */
 320 function PMA_DBI_real_query($query, $link = null, $options = 0)
 321 {
 322     $query = trim(preg_replace('/  */', ' ', str_replace("\n", ' ', $query)));
 323     for ($i = 0; $i < count($GLOBALS['dummy_queries']); $i++) {
 324         if ($GLOBALS['dummy_queries'][$i]['query'] == $query) {
 325             $GLOBALS['dummy_queries'][$i]['pos'] = 0;
 326             if (is_array($GLOBALS['dummy_queries'][$i]['result'])) {
 327                 return $i;
 328             } else {
 329                 return false;
 330             }
 331         }
 332     }
 333     echo "Not supported query: $query\n";
 334     return false;
 335 }
 336
 337 /**
 338  * returns result data from $result
 339  *
 340  * @param resource $result result  MySQL result
 341  *
 342  * @return array
 343  */
 344 function PMA_DBI_fetch_any($result)
 345 {
 346     $query_data = $GLOBALS['dummy_queries'][$result];
 347     if ($query_data['pos'] >= count($query_data['result'])) {
 348         return false;
 349     }
 350     $ret = $query_data['result'][$query_data['pos']];
 351     $GLOBALS['dummy_queries'][$result]['pos'] += 1;
 352     return $ret;
 353 }
 354
 355 /**
 356  * returns array of rows with associative and numeric keys from $result
 357  *
 358  * @param resource $result result  MySQL result
 359  *
 360  * @return array
 361  */
 362 function PMA_DBI_fetch_array($result)
 363 {
 364     $data = PMA_DBI_fetch_any($result);
 365     if (is_array($data) && isset($GLOBALS['dummy_queries'][$result]['columns'])) {
 366         foreach ($data as $key => $val) {
 367             $data[$GLOBALS['dummy_queries'][$result]['columns'][$key]] = $val;
 368         }
 369         return $data;
 370     }
 371     return $data;
 372 }
 373
 374 /**
 375  * returns array of rows with associative keys from $result
 376  *
 377  * @param resource $result MySQL result
 378  *
 379  * @return array
 380  */
 381 function PMA_DBI_fetch_assoc($result)
 382 {
 383     $data = PMA_DBI_fetch_any($result);
 384     if (is_array($data) && isset($GLOBALS['dummy_queries'][$result]['columns'])) {
 385         $ret = array();
 386         foreach ($data as $key => $val) {
 387             $ret[$GLOBALS['dummy_queries'][$result]['columns'][$key]] = $val;
 388         }
 389         return $ret;
 390     }
 391     return $data;
 392 }
 393
 394 /**
 395  * returns array of rows with numeric keys from $result
 396  *
 397  * @param resource $result MySQL result
 398  *
 399  * @return array
 400  */
 401 function PMA_DBI_fetch_row($result)
 402 {
 403     $data = PMA_DBI_fetch_any($result);
 404     return $data;
 405 }
 406
 407 /**
 408  * Adjusts the result pointer to an arbitrary row in the result
 409  *
 410  * @param resource $result database result
 411  * @param integer  $offset offset to seek
 412  *
 413  * @return bool true on success, false on failure
 414  */
 415 function PMA_DBI_data_seek($result, $offset)
 416 {
 417     if ($offset > count($GLOBALS['dummy_queries'][$result]['result'])) {
 418         return false;
 419     }
 420     $GLOBALS['dummy_queries'][$result]['pos'] = $offset;
 421     return true;
 422 }
 423
 424 /**
 425  * Frees memory associated with the result
 426  *
 427  * @param resource $result database result
 428  *
 429  * @return void
 430  */
 431 function PMA_DBI_free_result($result)
 432 {
 433     return;
 434 }
 435
 436 /**
 437  * Check if there are any more query results from a multi query
 438  *
 439  * @return bool false
 440  */
 441 function PMA_DBI_more_results()
 442 {
 443     return false;
 444 }
 445
 446 /**
 447  * Prepare next result from multi_query
 448  *
 449  * @return boo false
 450  */
 451 function PMA_DBI_next_result()
 452 {
 453     return false;
 454 }
 455
 456 /**
 457  * returns the number of rows returned by last query
 458  *
 459  * @param resource $result MySQL result
 460  *
 461  * @return string|int
 462  */
 463 function PMA_DBI_num_rows($result)
 464 {
 465     if (!is_bool($result)) {
 466         return count($GLOBALS['dummy_queries'][$result]['result']);
 467     } else {
 468         return 0;
 469     }
 470 }
 471
 472 /**
 473  * returns the number of rows affected by last query
 474  *
 475  * @param resource $link           the mysql object
 476  * @param bool     $get_from_cache whether to retrieve from cache
 477  *
 478  * @return string|int
 479  */
 480 function PMA_DBI_affected_rows($link = null, $get_from_cache = true)
 481 {
 482     return 0;
 483 }
 484
 485 /**
 486  * return number of fields in given $result
 487  *
 488  * @param resource $result MySQL result
 489  *
 490  * @return int  field count
 491  */
 492 function PMA_DBI_num_fields($result)
 493 {
 494     if (isset($GLOBALS['dummy_queries'][$result]['columns'])) {
 495         return count($GLOBALS['dummy_queries'][$result]['columns']);
 496     } else {
 497         return 0;
 498     }
 499 }
 500
 501 /**
 502  * returns last error message or false if no errors occured
 503  *
 504  * @param resource $link mysql link
 505  *
 506  * @return string|bool $error or false
 507  */
 508 function PMA_DBI_getError($link = null)
 509 {
 510     return false;
 511 }