db/msaccess.php

   1 <?php
   2 /***************************************************************************
   3  *                               msaccess.php
   4  *                            -------------------
   5  *   begin                : Saturday, Feb 13, 2001
   6  *   copyright            : (C) 2001 The phpBB Group
   7  *   email                : support@phpbb.com
   8  *
   9  *   $Id: msaccess.php,v 1.8.2.2 2002/09/28 12:50:59 psotfx Exp $
  10  *
  11  ***************************************************************************/
  12
  13 /***************************************************************************
  14  *
  15  *   This program is free software; you can redistribute it and/or modify
  16  *   it under the terms of the GNU General Public License as published by
  17  *   the Free Software Foundation; either version 2 of the License, or
  18  *   (at your option) any later version.
  19  *
  20  ***************************************************************************/
  21
  22 if(!defined("SQL_LAYER"))
  23 {
  24
  25 define("SQL_LAYER","msaccess");
  26
  27 class sql_db
  28 {
  29
  30         var $db_connect_id;
  31         var $result_ids = array();
  32         var $result;
  33
  34         var $next_id;
  35
  36         var $num_rows = array();
  37         var $current_row = array();
  38         var $field_names = array();
  39         var $field_types = array();
  40         var $result_rowset = array();
  41
  42         var $num_queries = 0;
  43
  44         //
  45         // Constructor
  46         //
  47         function sql_db($sqlserver, $sqluser, $sqlpassword, $database, $persistency = true)
  48         {
  49                 $this->persistency = $persistency;
  50                 $this->server = $sqlserver;
  51                 $this->user = $sqluser;
  52                 $this->password = $sqlpassword;
  53                 $this->dbname = $database;
  54
  55                 $this->db_connect_id = ($this->persistency) ? odbc_pconnect($this->server, $this->user, $this->password) : odbc_connect($this->server, $this->user, $this->password);
  56
  57                 return ( $this->db_connect_id ) ? $this->db_connect_id : false;
  58         }
  59         //
  60         // Other base methods
  61         //
  62         function sql_close()
  63         {
  64                 if($this->db_connect_id)
  65                 {
  66                         if( $this->in_transaction )
  67                         {
  68                                 @odbc_commit($this->db_connect_id);
  69                         }
  70
  71                         if( count($this->result_rowset) )
  72                         {
  73                                 unset($this->result_rowset);
  74                                 unset($this->field_names);
  75                                 unset($this->field_types);
  76                                 unset($this->num_rows);
  77                                 unset($this->current_row);
  78                         }
  79
  80                         return @odbc_close($this->db_connect_id);
  81                 }
  82                 else
  83                 {
  84                         return false;
  85                 }
  86         }
  87
  88         //
  89         // Query method
  90         //
  91         function sql_query($query = "", $transaction = FALSE)
  92         {
  93                 if( $query != "" )
  94                 {
  95                         $this->num_queries++;
  96
  97                         if( $transaction == BEGIN_TRANSACTION && !$this->in_transaction )
  98                         {
  99                                 if( !odbc_autocommit($this->db_connect_id, false) )
 100                                 {
 101                                         return false;
 102                                 }
 103                                 $this->in_transaction = TRUE;
 104                         }
 105
 106                         $query = str_replace("LOWER(", "LCASE(", $query);
 107
 108                         if( preg_match("/^SELECT(.*?)(LIMIT ([0-9]+)[, ]*([0-9]+)*)?$/s", $query, $limits) )
 109                         {
 110                                 $query = $limits[1];
 111
 112                                 if( !empty($limits[2]) )
 113                                 {
 114                                         $row_offset = ( $limits[4] ) ? $limits[3] : "";
 115                                         $num_rows = ( $limits[4] ) ? $limits[4] : $limits[3];
 116
 117                                         $query = "TOP " . ( $row_offset + $num_rows ) . $query;
 118                                 }
 119
 120                                 $this->result = odbc_exec($this->db_connect_id, "SELECT $query");
 121
 122                                 if( $this->result )
 123                                 {
 124                                         if( empty($this->field_names[$this->result]) )
 125                                         {
 126                                                 for($i = 1; $i < odbc_num_fields($this->result) + 1; $i++)
 127                                                 {
 128                                                         $this->field_names[$this->result][] = odbc_field_name($this->result, $i);
 129                                                         $this->field_types[$this->result][] = odbc_field_type($this->result, $i);
 130                                                 }
 131                                         }
 132
 133                                         $this->current_row[$this->result] = 0;
 134                                         $this->result_rowset[$this->result] = array();
 135
 136                                         $row_outer = ( isset($row_offset) ) ? $row_offset + 1 : 1;
 137                                         $row_outer_max = ( isset($num_rows) ) ? $row_offset + $num_rows + 1 : 1E9;
 138                                         $row_inner = 0;
 139
 140                                         while( odbc_fetch_row($this->result, $row_outer) && $row_outer < $row_outer_max )
 141                                         {
 142                                                 for($j = 0; $j < count($this->field_names[$this->result]); $j++)
 143                                                 {
 144                                                         $this->result_rowset[$this->result][$row_inner][$this->field_names[$this->result][$j]] = stripslashes(odbc_result($this->result, $j + 1));
 145                                                 }
 146
 147                                                 $row_outer++;
 148                                                 $row_inner++;
 149                                         }
 150
 151                                         $this->num_rows[$this->result] = count($this->result_rowset[$this->result]);
 152
 153                                         odbc_free_result($this->result);
 154                                 }
 155
 156                         }
 157                         else if( eregi("^INSERT ", $query) )
 158                         {
 159                                 $this->result = odbc_exec($this->db_connect_id, $query);
 160
 161                                 if( $this->result )
 162                                 {
 163                                         $result_id = odbc_exec($this->db_connect_id, "SELECT @@IDENTITY");
 164                                         if( $result_id )
 165                                         {
 166                                                 if( odbc_fetch_row($result_id) )
 167                                                 {
 168                                                         $this->next_id[$this->db_connect_id] = odbc_result($result_id, 1);
 169                                                         $this->affected_rows[$this->db_connect_id] = odbc_num_rows($this->result);
 170                                                 }
 171                                         }
 172                                 }
 173                         }
 174                         else
 175                         {
 176                                 $this->result = odbc_exec($this->db_connect_id, $query);
 177
 178                                 if( $this->result )
 179                                 {
 180                                         $this->affected_rows[$this->db_connect_id] = odbc_num_rows($this->result);
 181                                 }
 182                         }
 183
 184                         if( !$this->result )
 185                         {
 186                                 if( $this->in_transaction )
 187                                 {
 188                                         odbc_rollback($this->db_connect_id);
 189                                         odbc_autocommit($this->db_connect_id, true);
 190                                         $this->in_transaction = FALSE;
 191                                 }
 192
 193                                 return false;
 194                         }
 195
 196                         if( $transaction == END_TRANSACTION && $this->in_transaction )
 197                         {
 198                                 $this->in_transaction = FALSE;
 199
 200                                 if ( !@odbc_commit($this->db_connect_id) )
 201                                 {
 202                                         odbc_rollback($this->db_connect_id);
 203                                         odbc_autocommit($this->db_connect_id, true);
 204                                         return false;
 205                                 }
 206                                 odbc_autocommit($this->db_connect_id, true);
 207                         }
 208
 209                         return $this->result;
 210                 }
 211                 else
 212                 {
 213                         if( $transaction == END_TRANSACTION && $this->in_transaction )
 214                         {
 215                                 $this->in_transaction = FALSE;
 216
 217                                 if ( !@odbc_commit($this->db_connect_id) )
 218                                 {
 219                                         odbc_rollback($this->db_connect_id);
 220                                         odbc_autocommit($this->db_connect_id, true);
 221                                         return false;
 222                                 }
 223                                 odbc_autocommit($this->db_connect_id, true);
 224                         }
 225
 226                         return true;
 227                 }
 228         }
 229
 230         //
 231         // Other query methods
 232         //
 233         function sql_numrows($query_id = 0)
 234         {
 235                 if( !$query_id )
 236                 {
 237                         $query_id = $this->result;
 238                 }
 239
 240                 return ( $query_id ) ? $this->num_rows[$query_id] : false;
 241         }
 242
 243         function sql_numfields($query_id = 0)
 244         {
 245                 if( !$query_id )
 246                 {
 247                         $query_id = $this->result;
 248                 }
 249
 250                 return ( $query_id ) ? count($this->field_names[$query_id]) : false;
 251         }
 252
 253         function sql_fieldname($offset, $query_id = 0)
 254         {
 255                 if( !$query_id )
 256                 {
 257                         $query_id = $this->result;
 258                 }
 259
 260                 return ( $query_id ) ? $this->field_names[$query_id][$offset] : false;
 261         }
 262
 263         function sql_fieldtype($offset, $query_id = 0)
 264         {
 265                 if( !$query_id )
 266                 {
 267                         $query_id = $this->result;
 268                 }
 269
 270                 return ( $query_id ) ? $this->field_types[$query_id][$offset] : false;
 271         }
 272
 273         function sql_fetchrow($query_id = 0)
 274         {
 275                 if( !$query_id )
 276                 {
 277                         $query_id = $this->result;
 278                 }
 279
 280                 if( $query_id )
 281                 {
 282                         return ( $this->num_rows[$query_id] && $this->current_row[$query_id] < $this->num_rows[$query_id] ) ? $this->result_rowset[$query_id][$this->current_row[$query_id]++] : false;
 283                 }
 284                 else
 285                 {
 286                         return false;
 287                 }
 288         }
 289
 290         function sql_fetchrowset($query_id = 0)
 291         {
 292                 if( !$query_id )
 293                 {
 294                         $query_id = $this->result;
 295                 }
 296
 297                 if( $query_id )
 298                 {
 299                         return ( $this->num_rows[$query_id] ) ? $this->result_rowset[$query_id] : false;
 300                 }
 301                 else
 302                 {
 303                         return false;
 304                 }
 305         }
 306
 307         function sql_fetchfield($field, $row = -1, $query_id = 0)
 308         {
 309                 if( !$query_id )
 310                 {
 311                         $query_id = $this->result;
 312                 }
 313
 314                 if( $query_id )
 315                 {
 316                         if( $row < $this->num_rows[$query_id] )
 317                         {
 318                                 $getrow = ($row == -1) ? $this->current_row[$query_id] - 1 : $row;
 319
 320                                 return $this->result_rowset[$query_id][$getrow][$this->field_names[$query_id][$field]];
 321                         }
 322                         else
 323                         {
 324                                 return false;
 325                         }
 326                 }
 327                 else
 328                 {
 329                         return false;
 330                 }
 331         }
 332
 333         function sql_rowseek($offset, $query_id = 0)
 334         {
 335                 if( !$query_id )
 336                 {
 337                         $query_id = $this->result;
 338                 }
 339
 340                 if( $query_id )
 341                 {
 342                         $this->current_row[$query_id] = $offset - 1;
 343                         return true;
 344                 }
 345                 else
 346                 {
 347                         return false;
 348                 }
 349         }
 350
 351         function sql_nextid()
 352         {
 353                 return ( $this->next_id[$this->db_connect_id] ) ? $this->next_id[$this->db_connect_id] : false;
 354         }
 355
 356         function sql_affectedrows()
 357         {
 358                 return ( $this->affected_rows[$this->db_connect_id] ) ? $this->affected_rows[$this->db_connect_id] : false;
 359         }
 360
 361         function sql_freeresult($query_id = 0)
 362         {
 363                 if( !$query_id )
 364                 {
 365                         $query_id = $this->result;
 366                 }
 367
 368                 unset($this->num_rows[$query_id]);
 369                 unset($this->current_row[$query_id]);
 370                 unset($this->result_rowset[$query_id]);
 371                 unset($this->field_names[$query_id]);
 372                 unset($this->field_types[$query_id]);
 373
 374                 return true;
 375         }
 376
 377         function sql_error()
 378         {
 379                 $error['code'] = "";//odbc_error($this->db_connect_id);
 380                 $error['message'] = "Error";//odbc_errormsg($this->db_connect_id);
 381
 382                 return $error;
 383         }
 384
 385 } // class sql_db
 386
 387 } // if ... define
 388
 389 ?>