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421 lines
7.7 KiB
PHP
421 lines
7.7 KiB
PHP
<?php
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/***************************************************************************
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* db2.php
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* -------------------
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* begin : Saturday, Feb 13, 2001
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* copyright : (C) 2001 The phpBB Group
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* email : support@phpbb.com
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*
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* $Id$
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*
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***************************************************************************/
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/***************************************************************************
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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***************************************************************************/
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if(!defined("SQL_LAYER"))
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{
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define("SQL_LAYER","db2");
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class sql_db
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{
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var $db_connect_id;
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var $query_result;
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var $query_resultset;
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var $query_numrows;
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var $next_id;
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var $row = array();
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var $rowset = array();
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var $row_index;
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var $num_queries = 0;
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//
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// Constructor
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//
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function sql_db($sqlserver, $sqluser, $sqlpassword, $database, $persistency = true)
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{
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$this->persistency = $persistency;
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$this->user = $sqluser;
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$this->password = $sqlpassword;
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$this->dbname = $database;
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$this->server = $sqlserver;
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if($this->persistency)
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{
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$this->db_connect_id = odbc_pconnect($this->server, "", "");
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}
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else
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{
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$this->db_connect_id = odbc_connect($this->server, "", "");
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}
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if($this->db_connect_id)
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{
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@odbc_autocommit($this->db_connect_id, off);
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return $this->db_connect_id;
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}
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else
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{
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return false;
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}
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}
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//
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// Other base methods
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//
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function sql_close()
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{
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if($this->db_connect_id)
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{
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if($this->query_result)
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{
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@odbc_free_result($this->query_result);
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}
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$result = @odbc_close($this->db_connect_id);
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return $result;
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}
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else
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{
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return false;
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}
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}
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//
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// Query method
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//
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function sql_query($query = "", $transaction = FALSE)
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{
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//
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// Remove any pre-existing queries
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//
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unset($this->query_result);
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unset($this->row);
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if($query != "")
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{
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$this->num_queries++;
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if(!eregi("^INSERT ",$query))
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{
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if(eregi("LIMIT", $query))
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{
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preg_match("/^(.*)LIMIT ([0-9]+)[, ]*([0-9]+)*/s", $query, $limits);
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$query = $limits[1];
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if($limits[3])
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{
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$row_offset = $limits[2];
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$num_rows = $limits[3];
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}
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else
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{
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$row_offset = 0;
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$num_rows = $limits[2];
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}
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$query .= " FETCH FIRST ".($row_offset+$num_rows)." ROWS ONLY OPTIMIZE FOR ".($row_offset+$num_rows)." ROWS";
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$this->query_result = odbc_exec($this->db_connect_id, $query);
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$query_limit_offset = $row_offset;
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$this->result_numrows[$this->query_result] = $num_rows;
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}
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else
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{
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$this->query_result = odbc_exec($this->db_connect_id, $query);
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$row_offset = 0;
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$this->result_numrows[$this->query_result] = 5E6;
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}
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$result_id = $this->query_result;
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if($this->query_result && eregi("^SELECT", $query))
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{
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for($i = 1; $i < odbc_num_fields($result_id)+1; $i++)
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{
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$this->result_field_names[$result_id][] = odbc_field_name($result_id, $i);
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}
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$i = $row_offset + 1;
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$k = 0;
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while(odbc_fetch_row($result_id, $i) && $k < $this->result_numrows[$result_id])
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{
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for($j = 1; $j < count($this->result_field_names[$result_id])+1; $j++)
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{
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$this->result_rowset[$result_id][$k][$this->result_field_names[$result_id][$j-1]] = odbc_result($result_id, $j);
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}
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$i++;
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$k++;
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}
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$this->result_numrows[$result_id] = $k;
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$this->row_index[$result_id] = 0;
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}
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else
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{
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$this->result_numrows[$result_id] = @odbc_num_rows($result_id);
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$this->row_index[$result_id] = 0;
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}
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}
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else
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{
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if(eregi("^(INSERT|UPDATE) ", $query))
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{
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$query = preg_replace("/\\\'/s", "''", $query);
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}
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$this->query_result = odbc_exec($this->db_connect_id, $query);
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if($this->query_result)
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{
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$sql_id = "VALUES(IDENTITY_VAL_LOCAL())";
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$id_result = odbc_exec($this->db_connect_id, $sql_id);
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if($id_result)
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{
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$row_result = odbc_fetch_row($id_result);
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if($row_result)
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{
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$this->next_id[$this->query_result] = odbc_result($id_result, 1);
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}
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}
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}
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odbc_commit($this->db_connect_id);
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$this->query_limit_offset[$this->query_result] = 0;
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$this->result_numrows[$this->query_result] = 0;
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}
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return $this->query_result;
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}
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else
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{
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return false;
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}
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}
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//
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// Other query methods
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//
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function sql_numrows($query_id = 0)
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{
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if(!$query_id)
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{
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$query_id = $this->query_result;
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}
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if($query_id)
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{
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return $this->result_numrows[$query_id];
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}
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else
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{
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return false;
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}
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}
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function sql_affectedrows($query_id = 0)
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{
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if(!$query_id)
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{
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$query_id = $this->query_result;
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}
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if($query_id)
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{
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return $this->result_numrows[$query_id];
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}
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else
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{
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return false;
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}
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}
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function sql_numfields($query_id = 0)
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{
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if(!$query_id)
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{
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$query_id = $this->query_result;
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}
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if($query_id)
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{
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$result = count($this->result_field_names[$query_id]);
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return $result;
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}
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else
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{
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return false;
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}
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}
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function sql_fieldname($offset, $query_id = 0)
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{
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if(!$query_id)
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{
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$query_id = $this->query_result;
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}
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if($query_id)
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{
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$result = $this->result_field_names[$query_id][$offset];
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return $result;
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}
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else
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{
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return false;
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}
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}
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function sql_fieldtype($offset, $query_id = 0)
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{
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if(!$query_id)
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{
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$query_id = $this->query_result;
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}
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if($query_id)
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{
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$result = @odbc_field_type($query_id, $offset);
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return $result;
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}
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else
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{
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return false;
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}
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}
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function sql_fetchrow($query_id = 0)
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{
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if(!$query_id)
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{
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$query_id = $this->query_result;
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}
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if($query_id)
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{
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if($this->row_index[$query_id] < $this->result_numrows[$query_id])
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{
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$result = $this->result_rowset[$query_id][$this->row_index[$query_id]];
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$this->row_index[$query_id]++;
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return $result;
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}
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else
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{
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return false;
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}
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}
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else
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{
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return false;
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}
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}
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function sql_fetchrowset($query_id = 0)
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{
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if(!$query_id)
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{
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$query_id = $this->query_result;
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}
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if($query_id)
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{
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$this->row_index[$query_id] = $this->result_numrows[$query_id];
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return $this->result_rowset[$query_id];
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}
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else
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{
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return false;
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}
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}
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function sql_fetchfield($field, $row = -1, $query_id = 0)
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{
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if(!$query_id)
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{
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$query_id = $this->query_result;
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}
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if($query_id)
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{
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if($row < $this->result_numrows[$query_id])
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{
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if($row == -1)
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{
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$getrow = $this->row_index[$query_id]-1;
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}
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else
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{
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$getrow = $row;
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}
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return $this->result_rowset[$query_id][$getrow][$this->result_field_names[$query_id][$field]];
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}
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else
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{
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return false;
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}
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}
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else
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{
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return false;
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}
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}
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function sql_rowseek($offset, $query_id = 0)
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{
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if(!$query_id)
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{
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$query_id = $this->query_result;
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}
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if($query_id)
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{
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$this->row_index[$query_id] = 0;
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return true;
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}
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else
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{
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return false;
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}
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}
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function sql_nextid($query_id = 0)
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{
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if(!$query_id)
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{
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$query_id = $this->query_result;
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}
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if($query_id)
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{
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return $this->next_id[$query_id];
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}
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else
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{
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return false;
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}
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}
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function sql_freeresult($query_id = 0)
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{
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if(!$query_id)
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{
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$query_id = $this->query_result;
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}
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if($query_id)
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{
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$result = @odbc_free_result($query_id);
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return $result;
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}
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else
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{
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return false;
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}
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}
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function sql_error($query_id = 0)
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{
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// $result['code'] = @odbc_error($this->db_connect_id);
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// $result['message'] = @odbc_errormsg($this->db_connect_id);
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return "";
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}
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} // class sql_db
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} // if ... define
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?>
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