persistency = $persistency;
$this->user = $sqluser;
$this->password = $sqlpassword;
$this->dbname = $database;
$this->server = $sqlserver;
if($this->persistency)
{
$this->db_connect_id = odbc_pconnect($this->server, "", "");
}
else
{
$this->db_connect_id = odbc_connect($this->server, "", "");
}
if($this->db_connect_id)
{
@odbc_autocommit($this->db_connect_id, off);
return $this->db_connect_id;
}
else
{
return false;
}
}
//
// Other base methods
//
function sql_close()
{
if($this->db_connect_id)
{
if($this->query_result)
{
@odbc_free_result($this->query_result);
}
$result = @odbc_close($this->db_connect_id);
return $result;
}
else
{
return false;
}
}
//
// Query method
//
function sql_query($query = "", $transaction = FALSE)
{
//
// Remove any pre-existing queries
//
unset($this->query_result);
unset($this->row);
if($query != "")
{
$this->num_queries++;
if(!eregi("^INSERT ",$query))
{
if(eregi("LIMIT", $query))
{
preg_match("/^(.*)LIMIT ([0-9]+)[, ]*([0-9]+)*/s", $query, $limits);
$query = $limits[1];
if($limits[3])
{
$row_offset = $limits[2];
$num_rows = $limits[3];
}
else
{
$row_offset = 0;
$num_rows = $limits[2];
}
$query .= " FETCH FIRST ".($row_offset+$num_rows)." ROWS ONLY OPTIMIZE FOR ".($row_offset+$num_rows)." ROWS";
$this->query_result = odbc_exec($this->db_connect_id, $query);
$query_limit_offset = $row_offset;
$this->result_numrows[$this->query_result] = $num_rows;
}
else
{
$this->query_result = odbc_exec($this->db_connect_id, $query);
$row_offset = 0;
$this->result_numrows[$this->query_result] = 5E6;
}
$result_id = $this->query_result;
if($this->query_result && eregi("^SELECT", $query))
{
for($i = 1; $i < odbc_num_fields($result_id)+1; $i++)
{
$this->result_field_names[$result_id][] = odbc_field_name($result_id, $i);
}
$i = $row_offset + 1;
$k = 0;
while(odbc_fetch_row($result_id, $i) && $k < $this->result_numrows[$result_id])
{
for($j = 1; $j < count($this->result_field_names[$result_id])+1; $j++)
{
$this->result_rowset[$result_id][$k][$this->result_field_names[$result_id][$j-1]] = odbc_result($result_id, $j);
}
$i++;
$k++;
}
$this->result_numrows[$result_id] = $k;
$this->row_index[$result_id] = 0;
}
else
{
$this->result_numrows[$result_id] = @odbc_num_rows($result_id);
$this->row_index[$result_id] = 0;
}
}
else
{
if(eregi("^(INSERT|UPDATE) ", $query))
{
$query = preg_replace("/\\\'/s", "''", $query);
}
$this->query_result = odbc_exec($this->db_connect_id, $query);
if($this->query_result)
{
$sql_id = "VALUES(IDENTITY_VAL_LOCAL())";
$id_result = odbc_exec($this->db_connect_id, $sql_id);
if($id_result)
{
$row_result = odbc_fetch_row($id_result);
if($row_result)
{
$this->next_id[$this->query_result] = odbc_result($id_result, 1);
}
}
}
odbc_commit($this->db_connect_id);
$this->query_limit_offset[$this->query_result] = 0;
$this->result_numrows[$this->query_result] = 0;
}
return $this->query_result;
}
else
{
return false;
}
}
//
// Other query methods
//
function sql_numrows($query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
if($query_id)
{
return $this->result_numrows[$query_id];
}
else
{
return false;
}
}
function sql_affectedrows($query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
if($query_id)
{
return $this->result_numrows[$query_id];
}
else
{
return false;
}
}
function sql_numfields($query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
if($query_id)
{
$result = count($this->result_field_names[$query_id]);
return $result;
}
else
{
return false;
}
}
function sql_fieldname($offset, $query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
if($query_id)
{
$result = $this->result_field_names[$query_id][$offset];
return $result;
}
else
{
return false;
}
}
function sql_fieldtype($offset, $query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
if($query_id)
{
$result = @odbc_field_type($query_id, $offset);
return $result;
}
else
{
return false;
}
}
function sql_fetchrow($query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
if($query_id)
{
if($this->row_index[$query_id] < $this->result_numrows[$query_id])
{
$result = $this->result_rowset[$query_id][$this->row_index[$query_id]];
$this->row_index[$query_id]++;
return $result;
}
else
{
return false;
}
}
else
{
return false;
}
}
function sql_fetchrowset($query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
if($query_id)
{
$this->row_index[$query_id] = $this->result_numrows[$query_id];
return $this->result_rowset[$query_id];
}
else
{
return false;
}
}
function sql_fetchfield($field, $row = -1, $query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
if($query_id)
{
if($row < $this->result_numrows[$query_id])
{
if($row == -1)
{
$getrow = $this->row_index[$query_id]-1;
}
else
{
$getrow = $row;
}
return $this->result_rowset[$query_id][$getrow][$this->result_field_names[$query_id][$field]];
}
else
{
return false;
}
}
else
{
return false;
}
}
function sql_rowseek($offset, $query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
if($query_id)
{
$this->row_index[$query_id] = 0;
return true;
}
else
{
return false;
}
}
function sql_nextid($query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
if($query_id)
{
return $this->next_id[$query_id];
}
else
{
return false;
}
}
function sql_freeresult($query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
if($query_id)
{
$result = @odbc_free_result($query_id);
return $result;
}
else
{
return false;
}
}
function sql_error($query_id = 0)
{
// $result['code'] = @odbc_error($this->db_connect_id);
// $result['message'] = @odbc_errormsg($this->db_connect_id);
return "";
}
} // class sql_db
} // if ... define
?>
e-REdING. Biblioteca de la Escuela Superior de Ingenieros de Sevilla.
