<?php
/*******************************************************************
 * [JishiGou] (C)2005 - 2099 Cenwor Inc.
 *
 * This is NOT a freeware, use is subject to license terms
 *
 * @Filename xwbDB.class.php $
 *
 * @Author http://www.jishigou.net $
 *
 * @Date 2012-08-31 02:07:39 910840955 8366165 3208 $
 *******************************************************************/



class xwbDB {

	var $version = '';
	var $querynum = 0;
	var $link = null;
	function xwbDB(){}
	function connect($dbhost, $dbuser, $dbpw, $dbname = '', $pconnect = 0, $halt = TRUE, $dbcharset = '') {

		$func = empty($pconnect) ? 'mysql_connect' : 'mysql_pconnect';
		if(!$this->link = @$func($dbhost, $dbuser, $dbpw, 1)) {
			$halt && $this->halt('Can not connect to MySQL server');
		} else {
			if($this->version() > '4.1') {
				$dbcharset = str_replace('-', '', strtolower($dbcharset));				
				$serverset = $dbcharset ? 'character_set_connection='.$dbcharset.', character_set_results='.$dbcharset.', character_set_client=binary' : '';
				$serverset .= $this->version() > '5.0.1' ? ((empty($serverset) ? '' : ',').'sql_mode=\'\'') : '';
				$serverset && mysql_query("SET $serverset", $this->link);
			}
			$dbname && @mysql_select_db($dbname, $this->link);
		}

	}

	function select_db($dbname) {
		return mysql_select_db($dbname, $this->link);
	}

	function fetch_array($query, $result_type = MYSQL_ASSOC) {
		return mysql_fetch_array($query, $result_type);
	}

	function fetch_first($sql) {
		return $this->fetch_array($this->query($sql));
	}

	function result_first($sql) {
		return $this->result($this->query($sql), 0);
	}

	function query($sql, $type = '') {
		$func = $type == 'UNBUFFERED' && @function_exists('mysql_unbuffered_query') ?
			'mysql_unbuffered_query' : 'mysql_query';
		if(!($query = $func($sql, $this->link)) && 'SKIP_ERROR'!=$type) {
			$this->halt('MySQL Query Error', $sql);
		}

		$this->querynum++;
		return $query;
	}

	function affected_rows() {
		return mysql_affected_rows($this->link);
	}

	function error() {
		return (($this->link) ? mysql_error($this->link) : mysql_error());
	}

	function errno() {
		return intval(($this->link) ? mysql_errno($this->link) : mysql_errno());
	}

	function result($query, $row = 0) {
		$query = @mysql_result($query, $row);
		return $query;
	}

	function num_rows($query) {
		$query = mysql_num_rows($query);
		return $query;
	}

	function num_fields($query) {
		return mysql_num_fields($query);
	}

	function free_result($query) {
		return mysql_free_result($query);
	}

	function insert_id() {
		return ($id = mysql_insert_id($this->link)) >= 0 ? $id : $this->result($this->query("SELECT last_insert_id()"), 0);
	}

	function fetch_row($query) {
		$query = mysql_fetch_row($query);
		return $query;
	}

	function fetch_fields($query) {
		return mysql_fetch_field($query);
	}

	function version() {
		if(empty($this->version)) {
			$this->version = mysql_get_server_info($this->link);
		}
		return $this->version;
	}

	function close() {
		return mysql_close($this->link);
	}

	function halt($message = '', $sql = '') {
		$dberror = $this->error();
		$dberrno = $this->errno();
		$sql = htmlspecialchars($sql);
		$message = $message ? $message : 'SQL ERROR ';
		echo " <hr size=1> <font color=red> $message : </font> <hr size=1> ERRORNO: $dberrno <BR> ERRSTR: $dberror <BR> SQL: $sql  <hr size=1>  ";
		exit;
	}
}
?>