<?php
//****************************************************************************
// phpDatabase 2.1
//****************************************************************************
//      Author: Maxim Poltarak  <maxx at e dash taller dot net>
//    Category: Databases
//****************************************************************************
// The lib is FREEWARE. This means you may use it anywhere you want, you may
// do anything with it. The Author mentioned above is NOT responsible for any
// consequences of using this library.
// If you don't agree with this, you MAY NOT use the lib!
//****************************************************************************
// All improvings, feature requests, bug reports, etc. are gladly accepted.
//****************************************************************************
// Note: For best viewing of the code Tab size 4 is recommended
//****************************************************************************

class CDatabase
{
    var $link;
    var $db;
    var $host, $user, $pass;
    
    function CDatabase($db, $host = "localhost", $user = "", $pass = "") 
    {
        $this->db = $db;
        $this->host = $host;
        $this->user = $user;
        $this->pass = $pass;
        $str = "host={$host} port=5432 dbname={$db} user={$user} password={$pass}";
        $this->link = pg_connect($str);
    }
    
    function query($sql) 
    {       
        if (!$this->link) return 0;
        return pg_query($this->link, $sql);
    }
    
    function affected_rows() 
    {
        return pg_affected_rows($this->link);
    }
    
    function num_rows($q) 
    {
        return pg_num_rows($q);
    }
    
    function fetch_array($q) // fetchAll
    {
        return pg_fetch_array($q, NULL);
    }
    
    function fetch_object($q)  // fetchObject
    {
        return pg_fetch_object($q);
    }
    /*	function data_seek($q, $n) {
    return pg_data_seek($q, $n);
    }
    */
    
    function free_result($q) 
    {
        return pg_free_result($q);
    }
    
    function insert_id($seq) 
    {
        $query = "SELECT currval('$seq')";
        $res = $this->query($query);
        $row = pg_fetch_array($res, NULL, PGSQL_ASSOC);
        pg_free_result($res);
        return ($row) ? $row['currval'] : 0;
    }
    
    function error() 
    {
        return pg_last_error($this->link);
    }
    
    function error_die($msg = '') 
    {
        die(((empty($msg)) ? '' : $msg . ': ') . $this->error());
    }
    
    function sql2var($sql) 
    {
        
        if ((empty($sql)) || (!($query = $this->query($sql)))) return false;
        
        if ($this->num_rows($query) < 1) return false;
        return $this->result2var($query);
    }
    
    function result2var($q) 
    {
        
        if (!($Data = $this->fetch_array($q))) return false;
        $this->free_result($q);
        
        foreach($Data as $k => $v) $GLOBALS[$k] = $v;
        return true;
    }
    
    /*function sql2array($sql, $keyField = '') 
    {
        
        if ((empty($sql)) || (!($query = $this->query($sql)))) return false;
        
        if ($this->num_rows($query) < 1) return false;
        return $this->result2array($query, $keyField);
    }*/
    
    function result2array($q, $keyField = '') 
    {
        $Result = array();
        while ($Data = $this->fetch_array($q)) 
        if (empty($keyField)) $Result[] = $Data;
        else $Result[$Data[$keyField]] = $Data;
        $this->free_result($q);
        return $Result;
    }
    
    /*function list_tables() 
    {
        return mysql_list_tables($this->db, $this->link);
    }
    
    function list_fields($table_name) 
    {
        return mysql_list_fields($this->db, $table_name, $this->link);
    }*/
};