<?php

// Extended database class
// Date: 2008-12-15

class Database extends mysqli
{
  var $Prefix = '';
  var $LastQuery = '';

  function query($Query)
  {
    global $Config;

	if($Config['Web']['ShowSQLQuery'] == true) 
	  echo('<div style="border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: silver; padding-bottom: 2px; padding-top: 2px; font-size: 12px; font-family: Arial;">'.$Query.'</div>');
	$this->LastQuery = $Query;
    $DbResult = parent::query($Query);
    if(($this->error != '') and ($Config['Web']['ShowSQLError'] == true)) 
    {
      echo('<strong>Database error:</strong> '.$this->error.'<br />');
      echo('<strong>Query:</strong> '.$Query.'<br />');
      echo('<pre style="font-size: 9px">'); print_r(debug_backtrace()); echo('</pre>');
    }
    return($DbResult);
  }

  function select($Parameters) // Database, Table, Columns, Condition, Order
  {
    $Query = 'SELECT ';
    if(array_key_exists('Columns', $Parameters)) $Query .= $Parameters['Columns']; else $Query .= '*';
    $Query .= ' FROM ';
    if(array_key_exists('Database', $Parameters) and ($Parameters['Database'] != '')) $Query .= '`'.$Parameters['Database'].'`.';
    $Query .= '`'.$this->Prefix.$Parameters['Table'].'`';
    if(array_key_exists('Condition', $Parameters)) $Query .= ' WHERE '.$Parameters['Condition'];
    return($this->query($Query)); 
  }

  function delete($Parameters)
  {
    $Query = 'DELETE FROM ';
    if(array_key_exists('Database', $Parameters) and ($Parameters['Database'] != '')) $Query .= '`'.$Parameters['Database'].'`.';
    $Query .= '`'.$this->Prefix.$Parameters['Table'].'`';
    if(array_key_exists('Condition', $Parameters)) $Query .= ' WHERE '.$Parameters['Condition'];
    $this->query($Query);
  }

  function insert($Parameters, $Data)
  {
    $Name = '';
    $Values = '';
    foreach($Data as $Key => $Value)
    {
      $Value = strtr($Value, '"', '\"');
      $Name .= ',`'.$Key.'`';
      if($Value == 'NOW()') $Values .= ",".$Value;
        else $Values .= ",'".$Value."'";
    }
    $Name = substr($Name, 1);
    $Values = substr($Values, 1);
    $Query = 'INSERT INTO ';
    if(array_key_exists('Database', $Parameters) and ($Parameters['Database'] != '')) $Query .= '`'.$Parameters['Database'].'`.';
    $Query .= '`'.$this->Prefix.$Parameters['Table'].'`';
    $Query .= ' ('.$Name.') VALUES ('.$Values.')';
    $this->query($Query);
  }

  function update($Parameters, $Data)
  {
    $Values = '';
    foreach($Data as $Key => $Value)
    {
      $Value = strtr($Value, '"', '\"');
      if($Value != 'NOW()') $Value = "'".$Value."'";
      $Values .= ", `".$Key."`=".$Value;
    }
    $Values = substr($Values, 2);
    $Query = 'UPDATE ';
    if(array_key_exists('Database', $Parameters) and ($Parameters['Database'] != '')) $Query .= '`'.$Parameters['Database'].'`.';
    $Query .= '`'.$this->Prefix.$Parameters['Table'].'`';
    $Query .= ' SET '.$Values;
    if(array_key_exists('Condition', $Parameters)) $Query .= ' WHERE '.$Parameters['Condition'];
    $this->query($Query);
  }

  function replace($Parameters, $Data)
  {
    $Name = '';
    $Values = '';
    foreach($Data as $Key => $Value)
    {
      $Value = strtr($Value, '"', '\"');
      $Name .= ',`'.$Key.'`';
      if($Value == 'NOW()') $Values .= ",".$Value;
        else $Values .= ',"'.$Value.'"';
    }
    $Name = substr($Name, 1);
    $Values = substr($Values, 1);
    //echo('REPLACE INTO `'.$this->Prefix.$Table.'` ('.$Name.') VALUES ('.$Values.')<br>');
    $Query = 'REPLACE INTO ';
    if(array_key_exists('Database', $Parameters) and ($Parameters['Database'] != '')) $Query .= '`'.$Parameters['Database'].'`.';
    $Query .= '`'.$this->Prefix.$Parameters['Table'].'`';
    $Query .= ' ('.$Name.') VALUES ('.$Values.')';
    $this->query($Query);
  }

  function charset($Charset)
  {
    $this->query('SET CHARACTER SET '.$Charset);
  }

}

?>
