db/mssql-odbc.php

   1 <?php
   2 /***************************************************************************
   3  *                              mssql-odbc.php
   4  *                            -------------------
   5  *   begin                : Saturday, Feb 13, 2001
   6  *   copyright            : (C) 2001 The phpBB Group
   7  *   email                : support@phpbb.com
   8  *
   9  *   $Id: mssql-odbc.php,v 1.7 2002/03/20 17:48:30 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","mssql-odbc");
  26
  27 class sql_db
  28 {
  29
  30         var $db_connect_id;
  31         var $result;
  32
  33         var $next_id;
  34
  35         var $num_rows = array();
  36         var $current_row = array();
  37         var $field_names = array();
  38         var $field_types = array();
  39         var $result_rowset = array();
  40
  41         var $num_queries = 0;
  42
  43         //
  44         // Constructor
  45         //
  46         function sql_db($sqlserver, $sqluser, $sqlpassword, $database, $persistency = true)
  47         {
  48                 $this->persistency = $persistency;
  49                 $this->server = $sqlserver;
  50                 $this->user = $sqluser;
  51                 $this->password = $sqlpassword;
  52                 $this->dbname = $database;
  53
  54                 $this->db_connect_id = ($this->persistency) ? odbc_pconnect($this->server, $this->user, $this->password) : odbc_connect($this->server, $this->user, $this->password);
  55
  56                 return ( $this->db_connect_id ) ? $this->db_connect_id : false;
  57         }
  58         //
  59         // Other base methods
  60         //
  61         function sql_close()
  62         {
  63                 if($this->db_connect_id)
  64                 {
  65                         if( $this->in_transaction )
  66                         {
  67                                 @odbc_commit($this->db_connect_id);
  68                         }
  69
  70                         if( count($this->result_rowset) )
  71                         {
  72                                 unset($this->result_rowset);
  73                                 unset($this->field_names);
  74                                 unset($this->field_types);
  75                                 unset($this->num_rows);
  76                                 unset($this->current_row);
  77                         }
  78
  79                         return @odbc_close($this->db_connect_id);
  80                 }
  81                 else
  82                 {
  83                         return false;
  84                 }
  85         }
  86
  87         //
  88         // Query method
  89         //
  90         function sql_query($query = "", $transaction = FALSE)
  91         {
  92                 if( $query != "" )
  93                 {
  94                         $this->num_queries++;
  95
  96                         if( $transaction == BEGIN_TRANSACTION && !$this->in_transaction )
  97                         {
  98                                 if( !odbc_autocommit($this->db_connect_id, false) )
  99                                 {
 100                                         return false;
 101                                 }
 102                                 $this->in_transaction = TRUE;
 103                         }
 104
 105                         if( preg_match("/^SELECT(.*?)(LIMIT ([0-9]+)[, ]*([0-9]+)*)?$/s", $query, $limits) )
 106                         {
 107                                 $query = $limits[1];
 108
 109                                 if( !empty($limits[2]) )
 110                                 {
 111                                         $row_offset = ( $limits[4] ) ? $limits[3] : "";
 112                                         $num_rows = ( $limits[4] ) ? $limits[4] : $limits[3];
 113
 114                                         $query = "TOP " . ( $row_offset + $num_rows ) . $query;
 115                                 }
 116
 117                                 $this->result = odbc_exec($this->db_connect_id, "SELECT $query");
 118
 119                                 if( $this->result )
 120                                 {
 121                                         if( empty($this->field_names[$this->result]) )
 122                                         {
 123                                                 for($i = 1; $i < odbc_num_fields($this->result) + 1; $i++)
 124                                                 {
 125                                                         $this->field_names[$this->result][] = odbc_field_name($this->result, $i);
 126                                                         $this->field_types[$this->result][] = odbc_field_type($this->result, $i);
 127                                                 }
 128                                         }
 129
 130                                         $this->current_row[$this->result] = 0;
 131                                         $this->result_rowset[$this->result] = array();
 132
 133                                         $row_outer = ( isset($row_offset) ) ? $row_offset + 1 : 1;
 134                                         $row_outer_max = ( isset($num_rows) ) ? $row_offset + $num_rows + 1 : 1E9;
 135                                         $row_inner = 0;
 136
 137                                         while( odbc_fetch_row($this->result, $row_outer) && $row_outer < $row_outer_max )
 138                                         {
 139                                                 for($j = 0; $j < count($this->field_names[$this->result]); $j++)
 140                                                 {
 141                                                         $this->result_rowset[$this->result][$row_inner][$this->field_names[$this->result][$j]] = stripslashes(odbc_result($this->result, $j + 1));
 142                                                 }
 143
 144                                                 $row_outer++;
 145                                                 $row_inner++;
 146                                         }
 147
 148                                         $this->num_rows[$this->result] = count($this->result_rowset[$this->result]);
 149                                 }
 150
 151                         }
 152                         else if( eregi("^INSERT ", $query) )
 153                         {
 154                                 $this->result = odbc_exec($this->db_connect_id, $query);
 155
 156                                 if( $this->result )
 157                                 {
 158                                         $result_id = odbc_exec($this->db_connect_id, "SELECT @@IDENTITY");
 159                                         if( $result_id )
 160                                         {
 161                                                 if( odbc_fetch_row($result_id) )
 162                                                 {
 163                                                         $this->next_id[$this->db_connect_id] = odbc_result($result_id, 1);
 164                                                         $this->affected_rows[$this->db_connect_id] = odbc_num_rows($this->result);
 165                                                 }
 166                                         }
 167                                 }
 168                         }
 169                         else
 170                         {
 171                                 $this->result = odbc_exec($this->db_connect_id, $query);
 172
 173                                 if( $this->result )
 174                                 {
 175                                         $this->affected_rows[$this->db_connect_id] = odbc_num_rows($this->result);
 176                                 }
 177                         }
 178
 179                         if( !$this->result )
 180                         {
 181                                 if( $this->in_transaction )
 182                                 {
 183                                         odbc_rollback($this->db_connect_id);
 184                                         odbc_autocommit($this->db_connect_id, true);
 185                                         $this->in_transaction = FALSE;
 186                                 }
 187
 188                                 return false;
 189                         }
 190
 191                         if( $transaction == END_TRANSACTION && $this->in_transaction )
 192                         {
 193                                 $this->in_transaction = FALSE;
 194
 195                                 if ( !odbc_commit($this->db_connect_id) )
 196                                 {
 197                                         odbc_rollback($this->db_connect_id);
 198                                         odbc_autocommit($this->db_connect_id, true);
 199                                         return false;
 200                                 }
 201                                 odbc_autocommit($this->db_connect_id, true);
 202                         }
 203
 204                         odbc_free_result($this->result);
 205
 206                         return $this->result;
 207                 }
 208                 else
 209                 {
 210                         if( $transaction == END_TRANSACTION && $this->in_transaction )
 211                         {
 212                                 $this->in_transaction = FALSE;
 213
 214                                 if ( !@odbc_commit($this->db_connect_id) )
 215                                 {
 216                                         odbc_rollback($this->db_connect_id);
 217                                         odbc_autocommit($this->db_connect_id, true);
 218                                         return false;
 219                                 }
 220                                 odbc_autocommit($this->db_connect_id, true);
 221                         }
 222
 223                         return true;
 224                 }
 225         }
 226
 227         //
 228         // Other query methods
 229         //
 230         function sql_numrows($query_id = 0)
 231         {
 232                 if( !$query_id )
 233                 {
 234                         $query_id = $this->result;
 235                 }
 236
 237                 return ( $query_id ) ? $this->num_rows[$query_id] : false;
 238         }
 239
 240         function sql_numfields($query_id = 0)
 241         {
 242                 if( !$query_id )
 243                 {
 244                         $query_id = $this->result;
 245                 }
 246
 247                 return ( $query_id ) ? count($this->field_names[$query_id]) : false;
 248         }
 249
 250         function sql_fieldname($offset, $query_id = 0)
 251         {
 252                 if( !$query_id )
 253                 {
 254                         $query_id = $this->result;
 255                 }
 256
 257                 return ( $query_id ) ? $this->field_names[$query_id][$offset] : false;
 258         }
 259
 260         function sql_fieldtype($offset, $query_id = 0)
 261         {
 262                 if( !$query_id )
 263                 {
 264                         $query_id = $this->result;
 265                 }
 266
 267                 return ( $query_id ) ? $this->field_types[$query_id][$offset] : false;
 268         }
 269
 270         function sql_fetchrow($query_id = 0)
 271         {
 272                 if( !$query_id )
 273                 {
 274                         $query_id = $this->result;
 275                 }
 276
 277                 if( $query_id )
 278                 {
 279                         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;
 280                 }
 281                 else
 282                 {
 283                         return false;
 284                 }
 285         }
 286
 287         function sql_fetchrowset($query_id = 0)
 288         {
 289                 if( !$query_id )
 290                 {
 291                         $query_id = $this->result;
 292                 }
 293
 294                 if( $query_id )
 295                 {
 296                         return ( $this->num_rows[$query_id] ) ? $this->result_rowset[$query_id] : false;
 297                 }
 298                 else
 299                 {
 300                         return false;
 301                 }
 302         }
 303
 304         function sql_fetchfield($field, $row = -1, $query_id = 0)
 305         {
 306                 if( !$query_id )
 307                 {
 308                         $query_id = $this->result;
 309                 }
 310
 311                 if( $query_id )
 312                 {
 313                         if( $row < $this->num_rows[$query_id] )
 314                         {
 315                                 $getrow = ( $row == -1 ) ? $this->current_row[$query_id] - 1 : $row;
 316
 317                                 return $this->result_rowset[$query_id][$getrow][$this->field_names[$query_id][$field]];
 318
 319                         }
 320                         else
 321                         {
 322                                 return false;
 323                         }
 324                 }
 325                 else
 326                 {
 327                         return false;
 328                 }
 329         }
 330
 331         function sql_rowseek($offset, $query_id = 0)
 332         {
 333                 if( !$query_id )
 334                 {
 335                         $query_id = $this->result;
 336                 }
 337
 338                 if( $query_id )
 339                 {
 340                         $this->current_row[$query_id] = $offset - 1;
 341                         return true;
 342                 }
 343                 else
 344                 {
 345                         return false;
 346                 }
 347         }
 348
 349         function sql_nextid()
 350         {
 351                 return ( $this->next_id[$this->db_connect_id] ) ? $this->next_id[$this->db_connect_id] : false;
 352         }
 353
 354         function sql_affectedrows()
 355         {
 356                 return ( $this->affected_rows[$this->db_connect_id] ) ? $this->affected_rows[$this->db_connect_id] : false;
 357         }
 358
 359         function sql_freeresult($query_id = 0)
 360         {
 361                 if( !$query_id )
 362                 {
 363                         $query_id = $this->result;
 364                 }
 365
 366                 unset($this->num_rows[$query_id]);
 367                 unset($this->current_row[$query_id]);
 368                 unset($this->result_rowset[$query_id]);
 369                 unset($this->field_names[$query_id]);
 370                 unset($this->field_types[$query_id]);
 371
 372                 return true;
 373         }
 374
 375         function sql_error()
 376         {
 377                 $error['code'] = odbc_error($this->db_connect_id);
 378                 $error['message'] = odbc_errormsg($this->db_connect_id);
 379
 380                 return $error;
 381         }
 382
 383 } // class sql_db
 384
 385 } // if ... define
 386
 387 ?>