postgresql.class.php

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<?php

//
// +----------------------------------------------------------------------+
// | PHP version 4.0                                                      |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2001 The PHP Group                                |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license,      |
// | that is bundled with this package in the file LICENSE, and is        |
// | available at through the world-wide-web at                           |
// | http://www.php.net/license/2_02.txt.                                 |
// | If you did not receive a copy of the PHP license and are unable to   |
// | obtain it through the world-wide-web, please send a note to          |
// | license@php.net so we can mail you a copy immediately.               |
// +----------------------------------------------------------------------+
// | Authors: Stig Bakken <ssb@fast.no>                                   |
// |          Jan Dankert <phpdb@jandankert.de>                           |
// +----------------------------------------------------------------------+
//

class DB_postgresql
{
     var $connection;


     function connect( $conf )
     {
          $host   = $conf['host'];
          $user   = $conf['user'];
          $pw     = $conf['password'];
          $db     = $conf['database'];

          if   ( isset($conf['port']) )
               $host .= ':'.$conf['port'];
          
          if   ( $conf['persistent'] )
               $connect_function = 'pg_pconnect';
          else
               $connect_function = 'pg_connect';

          if    ( $pw != '' )
               $this->connection = @$connect_function( "host=$host dbname=$db user=$user password=$pw" );
          elseif ( $user != '' ) 
               $this->connection = @$connect_function( "host=$host dbname=$db user=$user" );
          elseif ( $host != '' ) 
               $this->connection = @$connect_function( "host=$host dbname=$db" );
          else 
               $this->connection = @$connect_function( "dbname=$db");
               
          if   ( ! is_resource($this->connection) )
          {
               $this->error = 'could not connect to database on host '.$host;
               return false;
          }

          return true;
    }



     function disconnect()
     {
          $ret = pg_close( $this->connection );
          $this->connection = null;
          return $ret;
     }



     function query($query)
     {
          $result = @pg_exec( $this->connection,$query );

          if   ( ! $result )
          {
               if   ( empty($this->error) )
                    $this->error = 'PostgreSQL says: '.@pg_errormessage();
               return FALSE;
          }

          return $result;;
     }


     function fetchRow( $result, $rownum )
     {
          return pg_fetch_array( $result,$rownum,PGSQL_ASSOC );
     }

 
     function freeResult($result)
     {
          return pg_freeresult($result);
     }


     function numCols($result )
     {
          return pg_numfields( $result );
     }



     function numRows( $result )
     {
          return pg_numrows($result);
     }
}

?>