<?php

class db_handle {

  private $conf;

  function __construct () 
  {
    $this->$conf = Conf::instance();
  }
  function conn ()
  {
   
    $db_conf = $this->$conf->get("db");
    $conn = mysql_pconnect($db_conf['host'],$db_conf['dbuser'],$db_conf['passwd']) 
	or die("cannot connect ".mysql_error());
    $this->$conf->set("dbh",$conn);
  }

  function checkConn () {
   
    if(! $this->$conf->get("dbh")) {
      $this->conn();
    }
  }
  function ins ($sql) {

    $this->checkConn();
    $db_conf = $this->$conf->get("db");
    mysql_select_db($db_conf['dbname'], $this->$conf->get("dbh"));

    return mysql_query($sql, $this->$conf->get("dbh"))
	 or die("cannot insert |". $sql."| ".mysql_error());
  }
	
  function sel ($sql) 
  {

    $db_conf = $this->$conf->get("db");
    
    $this->checkConn();
    $array = array();

    mysql_select_db($db_conf['dbname'],$this->$conf->get("dbh")) 
	or die("cannot select db ".$db_conf['dbname']." ".mysql_error());

    $results = mysql_query($sql, $this->$conf->get("dbh")) 
	or die("bad select $sql " . mysql_error());

    while($row = mysql_fetch_assoc($results)) {
      $array[]=$row;
    }

    mysql_free_result($results);
    $this->disconnect();
    return $array;
  }

  function del ($sql) {
    $this->checkConn();
    mysql_query($sql, $this->$conf->get("dbh"));
  }

  function disconnect () {
    $conn = $this->$conf->get("dbh");
    mysql_close($conn);
    $this->$conf->set("dbh", 0);
  }
}
?>