<?php

/* --------------------------------
System:PT book - PT小說小偷
Code: 杰少Pakey
----------------------------------- */

$pt_mysql = new dbQuery;

/**
* mysql查詢類
*
*/

class dbQuery {
/**
* 查詢總次數(shù)
*
* @var int
*/
var $querynum = 0;
/**
* 連接句柄
*
* @var object
*/
var $link;

/**
* 構(gòu)造函數(shù)
*
* @param string $dbhost 主機(jī)名
* @param string $dbuser 用戶
* @param string $dbpw 密碼
* @param string $dbname 數(shù)據(jù)庫名
* @param int $pconnect 是否持續(xù)連接
*/
function connect($dbhost, $dbuser, $dbpw, $dbname = '', $pconnect = 0) {
if($pconnect) {
if(!$this->link = @mysql_pconnect($dbhost, $dbuser, $dbpw)) {
$this->halt('Can not connect to MySQL server');
}
} else {
if(!$this->link = @mysql_connect($dbhost, $dbuser, $dbpw)) {
$this->halt('Can not connect to MySQL server');
}
}
if($this->version() > '4.1') {
global $dbcharset;
if($dbcharset) {
mysql_query("SET character_set_connection=$dbcharset, character_set_results=$dbcharset, character_set_client=binary", $this->link);
mysql_query("set names 'GBK'");
}

if($this->version() > '5.0.1') {
mysql_query("SET sql_mode=''", $this->link);
mysql_query("set names 'GBK'");
}
}

if($dbname) {
mysql_select_db($dbname, $this->link);
}

}
/**
* 選擇數(shù)據(jù)庫
*
* @param string $dbname
* @return
*/
function select_db($dbname) {
return mysql_select_db($dbname, $this->link);
}
/**
* 取出結(jié)果集中一條記錄
*
* @param object $query
* @param int $result_type
* @return array
*/
function fetch_array($query, $result_type = MYSQL_ASSOC) {
return mysql_fetch_array($query, $result_type);
}

/**
* 查詢SQL
*
* @param string $sql
* @param string $type
* @return object
*/
function query($sql, $type = '') {

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

$this->querynum++;
return $query;
}
/**
* 取影響條數(shù)
*
* @return int
*/
function affected_rows() {
return mysql_affected_rows($this->link);
}
/**
* 返回錯(cuò)誤信息
*
* @return array
*/
function error() {
return (($this->link) ? mysql_error($this->link) : mysql_error());
}
/**
* 返回錯(cuò)誤代碼
*
* @return int
*/
function errno() {
return intval(($this->link) ? mysql_errno($this->link) : mysql_errno());
}
/**
* 返回查詢結(jié)果
*
* @param object $query
* @param string $row
* @return mixed
*/
function result($query, $row) {
$query = @mysql_result($query, $row);
return $query;
}
/**
* 結(jié)果條數(shù)
*
* @param object $query
* @return int
*/
function num_rows($query) {
$query = mysql_num_rows($query);
return $query;
}
/**
* 取字段總數(shù)
*
* @param object $query
* @return int
*/
function num_fields($query) {
return mysql_num_fields($query);
}
/**
* 釋放結(jié)果集
*
* @param object $query
* @return bool
*/
function free_result($query) {
return mysql_free_result($query);
}
/**
* 返回自增ID
*
* @return int
*/
function insert_id() {
return ($id = mysql_insert_id($this->link)) >= 0 ? $id : $this->result($this->query("SELECT last_insert_id()"), 0);
}
/**
* 從結(jié)果集中取得一行作為枚舉數(shù)組
*
* @param object $query
* @return array
*/
function fetch_row($query) {
$query = mysql_fetch_row($query);
return $query;
}
/**
* 從結(jié)果集中取得列信息并作為對(duì)象返回
*
* @param object $query
* @return object
*/
function fetch_fields($query) {
return mysql_fetch_field($query);
}
/**
* 返回mysql版本
*
* @return string
*/
function version() {
return mysql_get_server_info($this->link);
}
/**
* 關(guān)閉連接
*
* @return bool
*/
function close() {
return mysql_close($this->link);
}
/**
* 輸出錯(cuò)誤信息
*
* @param string $message
* @param string $sql
*/
function halt($message = '', $sql = '') {
echo $message . ' ' . $sql;
exit;

}
}

?>