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1 <?php
2 /***************************************************************************
3  *                                 mysql4.php
4  *                            -------------------
5  *   begin                : Saturday, Feb 13, 2001
6  *   copyright            : (C) 2001 The phpBB Group
7  *   email                : supportphpbb.com
8  *
9  *   $Id: mysql4.php,v 1.5 2002/04/02 21:13:47 the_systech Exp $
10  *
11  ***************************************************************************/
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  ***************************************************************************/
22 if(!defined("SQL_LAYER"))
23 {
25 define("SQL_LAYER","mysql4");
27 class sql_db
28 {
30         var $db_connect_id;
31         var $query_result;
32         var $row = array();
33         var $rowset = array();
34         var $num_queries = 0;
35         var $in_transaction = 0;
37         //
38         // Constructor
39         //
40         function sql_db($sqlserver, $sqluser, $sqlpassword, $database, $persistency = true)
41         {
42                 $this->persistency = $persistency;
43                 $this->user = $sqluser;
44                 $this->password = $sqlpassword;
45                 $this->server = $sqlserver;
46                 $this->dbname = $database;
48                 $this->db_connect_id = ($this->persistency) ? mysql_pconnect($this->server, $this->user, $this->password) : mysql_connect($this->server, $this->user, $this->password);
50                 if( $this->db_connect_id )
51                 {
52                         if( $database != "" )
53                         {
54                                 $this->dbname = $database;
55                                 $dbselect = mysql_select_db($this->dbname);
57                                 if( !$dbselect )
58                                 {
59                                         mysql_close($this->db_connect_id);
60                                         $this->db_connect_id = $dbselect;
61                                 }
62                         }
64                         return $this->db_connect_id;
65                 }
66                 else
67                 {
68                         return false;
69                 }
70         }
72         //
73         // Other base methods
74         //
75         function sql_close()
76         {
77                 if( $this->db_connect_id )
78                 {
79                         //
80                         // Commit any remaining transactions
81                         //
82                         if( $this->in_transaction )
83                         {
84                                 mysql_query("COMMIT", $this->db_connect_id);
85                         }
87                         return mysql_close($this->db_connect_id);
88                 }
89                 else
90                 {
91                         return false;
92                 }
93         }
95         //
96         // Base query method
97         //
98         function sql_query($query = "", $transaction = FALSE)
99         {
100                 //
101                 // Remove any pre-existing queries
102                 //
103                 unset($this->query_result);
105                 if( $query != "" )
106                 {
107                         $this->num_queries++;
108                         if( $transaction == BEGIN_TRANSACTION && !$this->in_transaction )
109                         {
110                                 $result = mysql_query("BEGIN", $this->db_connect_id);
111                                 if(!$result)
112                                 {
113                                         return false;
114                                 }
115                                 $this->in_transaction = TRUE;
116                         }
118                         $this->query_result = mysql_query($query, $this->db_connect_id);
119                 }
120                 else
121                 {
122                         if( $transaction == END_TRANSACTION && $this->in_transaction )
123                         {
124                                 $result = mysql_query("COMMIT", $this->db_connect_id);
125                         }
126                 }
128                 if( $this->query_result )
129                 {
130                         unset($this->row[$this->query_result]);
131                         unset($this->rowset[$this->query_result]);
133                         if( $transaction == END_TRANSACTION && $this->in_transaction )
134                         {
135                                 $this->in_transaction = FALSE;
137                                 if ( !mysql_query("COMMIT", $this->db_connect_id) )
138                                 {
139                                         mysql_query("ROLLBACK", $this->db_connect_id);
140                                         return false;
141                                 }
142                         }
143                         
144                         return $this->query_result;
145                 }
146                 else
147                 {
148                         if( $this->in_transaction )
149                         {
150                                 mysql_query("ROLLBACK", $this->db_connect_id);
151                                 $this->in_transaction = FALSE;
152                         }
153                         return false;
154                 }
155         }
157         //
158         // Other query methods
159         //
160         function sql_numrows($query_id = 0)
161         {
162                 if( !$query_id )
163                 {
164                         $query_id = $this->query_result;
165                 }
167                 return ( $query_id ) ? mysql_num_rows($query_id) : false;
168         }
170         function sql_affectedrows()
171         {
172                 return ( $this->db_connect_id ) ? mysql_affected_rows($this->db_connect_id) : false;
173         }
175         function sql_numfields($query_id = 0)
176         {
177                 if( !$query_id )
178                 {
179                         $query_id = $this->query_result;
180                 }
182                 return ( $query_id ) ? mysql_num_fields($query_id) : false;
183         }
185         function sql_fieldname($offset, $query_id = 0)
186         {
187                 if( !$query_id )
188                 {
189                         $query_id = $this->query_result;
190                 }
192                 return ( $query_id ) ? mysql_field_name($query_id, $offset) : false;
193         }
195         function sql_fieldtype($offset, $query_id = 0)
196         {
197                 if( !$query_id )
198                 {
199                         $query_id = $this->query_result;
200                 }
202                 return ( $query_id ) ? mysql_field_type($query_id, $offset) : false;
203         }
205         function sql_fetchrow($query_id = 0)
206         {
207                 if( !$query_id )
208                 {
209                         $query_id = $this->query_result;
210                 }
212                 if( $query_id )
213                 {
214                         $this->row[$query_id] = mysql_fetch_array($query_id, MYSQL_ASSOC);
215                         return $this->row[$query_id];
216                 }
217                 else
218                 {
219                         return false;
220                 }
221         }
223         function sql_fetchrowset($query_id = 0)
224         {
225                 if( !$query_id )
226                 {
227                         $query_id = $this->query_result;
228                 }
230                 if( $query_id )
231                 {
232                         unset($this->rowset[$query_id]);
233                         unset($this->row[$query_id]);
235                         while($this->rowset[$query_id] = mysql_fetch_array($query_id, MYSQL_ASSOC))
236                         {
237                                 $result[] = $this->rowset[$query_id];
238                         }
240                         return $result;
241                 }
242                 else
243                 {
244                         return false;
245                 }
246         }
248         function sql_fetchfield($field, $rownum = -1, $query_id = 0)
249         {
250                 if( !$query_id )
251                 {
252                         $query_id = $this->query_result;
253                 }
255                 if( $query_id )
256                 {
257                         if( $rownum > -1 )
258                         {
259                                 $result = mysql_result($query_id, $rownum, $field);
260                         }
261                         else
262                         {
263                                 if( empty($this->row[$query_id]) && empty($this->rowset[$query_id]) )
264                                 {
265                                         if( $this->sql_fetchrow() )
266                                         {
267                                                 $result = $this->row[$query_id][$field];
268                                         }
269                                 }
270                                 else
271                                 {
272                                         if( $this->rowset[$query_id] )
273                                         {
274                                                 $result = $this->rowset[$query_id][$field];
275                                         }
276                                         else if( $this->row[$query_id] )
277                                         {
278                                                 $result = $this->row[$query_id][$field];
279                                         }
280                                 }
281                         }
283                         return $result;
284                 }
285                 else
286                 {
287                         return false;
288                 }
289         }
291         function sql_rowseek($rownum, $query_id = 0)
292         {
293                 if( !$query_id )
294                 {
295                         $query_id = $this->query_result;
296                 }
298                 return ( $query_id ) ? mysql_data_seek($query_id, $rownum) : false;
299         }
301         function sql_nextid()
302         {
303                 return ( $this->db_connect_id ) ? mysql_insert_id($this->db_connect_id) : false;
304         }
306         function sql_freeresult($query_id = 0)
307         {
308                 if( !$query_id )
309                 {
310                         $query_id = $this->query_result;
311                 }
313                 if ( $query_id )
314                 {
315                         unset($this->row[$query_id]);
316                         unset($this->rowset[$query_id]);
318                         mysql_free_result($query_id);
320                         return true;
321                 }
322                 else
323                 {
324                         return false;
325                 }
326         }
328         function sql_error()
329         {
330                 $result['message'] = mysql_error($this->db_connect_id);
331                 $result['code'] = mysql_errno($this->db_connect_id);
333                 return $result;
334         }
336 } // class sql_db
338 } // if ... define
340 ?>