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<?php
/*
* Session Management for PHP3
*
* Copyright (c) 1998,1999 NetUSE GmbH
* Boris Erdmann, Kristian Koehntopp
*
* $Id: db_pgsql.inc,v 1.13 1999/10/31 20:06:46 kk Exp $
*
*/
class DB_Sql {
var $Host = "";
var $Database = "";
var $User = "";
var $Password = "";
var $Link_ID = 0;
var $Query_ID = 0;
var $Record = array();
var $Row = 0;
var $Errno = 0;
var $Error = "";
var $Auto_Free = 0; # Set this to 1 for automatic pg_freeresult on
# last record.
function ifadd($add, $me) {
if("" != $add) return " ".$me.$add;
}
function connect() {
if ( 0 == $this->Link_ID ) {
$cstr = "dbname=".$this->Database.
$this->ifadd($this->Host, "host=").
$this->ifadd($this->Port, "port=").
$this->ifadd($this->User, "user=").
$this->ifadd($this->Password, "password=");
$this->Link_ID=pg_pconnect($cstr);
if (!$this->Link_ID) {
$this->halt("Link-ID == false, pconnect failed");
}
}
}
function query($Query_String) {
$this->connect();
# printf("<br>Debug: query = %s<br>\n", $Query_String);
$this->Query_ID = pg_Exec($this->Link_ID, $Query_String);
$this->Row = 0;
$this->Error = pg_ErrorMessage($this->Link_ID);
$this->Errno = ($this->Error == "")?0:1;
if (!$this->Query_ID) {
$this->halt("Invalid SQL: ".$Query_String);
}
return $this->Query_ID;
}
function next_record() {
$this->Record = @pg_fetch_array($this->Query_ID, $this->Row++);
$this->Error = pg_ErrorMessage($this->Link_ID);
$this->Errno = ($this->Error == "")?0:1;
$stat = is_array($this->Record);
if (!$stat && $this->Auto_Free) {
pg_freeresult($this->Query_ID);
$this->Query_ID = 0;
}
return $stat;
}
function seek($pos) {
$this->Row = $pos;
}
function lock($table, $mode = "write") {
if ($mode == "write") {
$result = pg_Exec($this->Link_ID, "lock table $table");
} else {
$result = 1;
}
return $result;
}
function unlock() {
return pg_Exec($this->Link_ID, "commit");
}
function metadata($table) {
$count = 0;
$id = 0;
$res = array();
$this->connect();
$id = pg_exec($this->Link_ID, "select * from $table");
if ($id < 0) {
$this->Error = pg_ErrorMessage($id);
$this->Errno = 1;
$this->halt("Metadata query failed.");
}
$count = pg_NumFields($id);
for ($i=0; $i<$count; $i++) {
$res[$i]["table"] = $table;
$res[$i]["name"] = pg_FieldName ($id, $i);
$res[$i]["type"] = pg_FieldType ($id, $i);
$res[$i]["len"] = pg_FieldSize ($id, $i);
$res[$i]["flags"] = "";
}
pg_FreeResult($id);
return $res;
}
function affected_rows() {
return pg_cmdtuples($this->Query_ID);
}
function num_rows() {
return pg_numrows($this->Query_ID);
}
function num_fields() {
return pg_numfields($this->Query_ID);
}
function nf() {
return $this->num_rows();
}
function np() {
print $this->num_rows();
}
function f($Name) {
return $this->Record[$Name];
}
function p($Name) {
print $this->Record[$Name];
}
## contributed Saillard Luc <luc.saillard@alcove.fr>
function nextid($seq_name) {
$this->connect();
$q_id=@pg_exec($this->Link_ID,"select nextval('$seq_name')");
if (!$q_id) {
if (!@pg_exec($this->Link_ID,"create sequence $seq_name")) {
$this->halt("<BR> nextid() function - unable to create sequence");
return 0;
}
$q_id=@pg_exec($this->Link_ID,"select nextval('$seq_name')");
if (!$q_id) {
$this->halt("<BR>pg_exec() failed:<BR>nextID function");
return 0;
}
}
$r=@pg_fetch_row($q_id, 0);
if ($r==false)
$nextid=0;
else
$nextid=$r[0];
return $nextid;
}
function halt($msg) {
printf("</td></tr></table><b>Database error:</b> %s<br>\n", $msg);
printf("<b>PostgreSQL Error</b>: %s (%s)<br>\n",
$this->Errno,
$this->Error);
die("Session halted.");
}
function table_names() {
$this->query("select relname from pg_class where relkind = 'r' and not relname like 'pg_%'");
$i=0;
while ($this->next_record())
{
$return[$i]["table_name"]= $this->f(0);
$return[$i]["tablespace_name"]=$this->Database;
$return[$i]["database"]=$this->Database;
$i++;
}
return $return;
}
}
?>
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