<?php
	/*
	** Please define SQL_*
	*/

	class Sql
	{
		private $_SQL;

		public function	__construct($user = SQL_USR, $password =
SQL_PSSWD, $database = SQL_DB, $host = SQL_HOST)
		{
			try
			{
				$this->_SQL = new PDO('mysql:host='
.$host. ';dbname=' .$database, $user, $password);
			}
			catch(Exception $e)
			{
				echo($e->getMessage());
			}
		}

		public function	__destruct()
		{
		}

		public static function PrefixQuery($str)
		{
			$words = array("INNER", "LEFT", "RIGHT", "JOIN",
"ON");
			$i = -1;
			$flag = 0;
			$tmp = "";

			if (SQL_PREFIXE == "")
				return ($str);
			$str = str_replace(',', ', ', $str);
			$rray = explode(' ', $str);
			$size = count($rray);
			while (++$i < $size)
			{
				while ($rray[$i] == "")
					++$i;
				if ($rray[$i] == "WHERE")
					$flag = 2;
				if ($i != 0)
					$tmp .= ' ';
				if ($flag == 1 && !in_array($rray[$i],
$words))
					$tmp .= SQL_PREFIXE.$rray[$i];
				else
				{
					if
(preg_match('/^[A-Za-z0-9_-]+\.{1}[A-Za-z0-9_-]+$/', $rray[$i]))
						$tmp .=
SQL_PREFIXE.$rray[$i];
					else
						$tmp .= $rray[$i];
				}
				if ($rray[$i] == "FROM")
					$flag = 1;
			}
			return ($tmp);
		}

		public function	Query($q)
		{
			$query = $this->_SQL->query($q);
			return ($query);
		}

		public function	Execute($query, $data = NULL)
		{
			$qry = $this->_SQL->prepare($query);
			if ($data == NULL)
				return ($qry->execute());
			return ($qry->execute($data));
		}

		public function ExecuteAll($query, $data = NULL)
		{
			$qry = $this->_SQL->prepare($query);
			if ($data != NULL)
			{
				if (!$qry->execute($data))
					return (false);
			}
			else
				$qry->execute();
			$r = $qry->fetchAll();
			return ($r);
		}
	}
?>