discuz7 phpMysql操作类

复制代码 代码如下:
<?php
/*
* MySql数据库连接类
* mysql.class.php 2009.04.15 by Hackbaby
*/
class dbstuff {
var $version = ;
var $querynum = 0;
var $link = null;
//连接数据库
function connect($dbhost, $dbuser, $dbpw, $dbname, $pconnect = 0, $halt = TRUE, $dbcharset2 = ) {
$conn = empty($pconnect) ? mysql_connect : mysql_pconnect;
if (!$this->link = @$conn($dbhost, $dbuser, $dbpw, 1)) {
$halt && $this->halt(Can not connect to MySQL server);
} else {
if($this->version() > 4.1) {
global $charset, $dbcharset;
$dbcharset = $dbcharset2 ? $dbcharset2 : $dbcharset;
$dbcharset = !$dbcharset && in_array(strtolower($charset), array(gbk, big5, utf-8)) ? str_replace(-, , $charset) : $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);
}

}
//选择数据库
function select_db($dbname) {
return mysql_select_db($dbname, $this->link);
}
//数据库执行后的返回方法
function fetch_array($query, $result_type = MYSQL_ASSOC) {
return mysql_fetch_array($query, $result_type);
}
//返回fetch_array方法执行后的返回值
function fetch_first($sql) {
return $this->fetch_array($this->query($sql));
}
//返回result方法执行后的返回值
function result_first($sql) {
return $this->result($this->query($sql), 0);
}
//执行对数据库的操作
function query($sql, $type = ) {
global $debug, $discuz_starttime, $sqldebug, $sqlspenttimes;
//判断debug调试
if(defined(SYS_DEBUG) && SYS_DEBUG) {
@include_once WEB_ROOT../include/debug.func.php;
sqldebug($sql);
}
//
$func = $type == UNBUFFERED && @function_exists(mysql_unbuffered_query) ?
mysql_unbuffered_query : mysql_query;
if(!($query = $func($sql, $this->link))) {
if(in_array($this->errno(), array(2006, 2013)) && substr($type, 0, 5) != RETRY) {
$this->close();
$this->connect($dbhost, $dbuser, $dbpw, $dbname, $pconnect, true, $dbcharset);
$this->query($sql, RETRY.$type);
} elseif($type != SILENT && substr($type, 5) != SILENT) {
$this->halt(MySQL Query Error, $sql);
}
}
//查询条数加1
$this->querynum++;
return $query;
}
//取得前一次 MySQL 操作所影响的记录行数
function affected_rows() {
return mysql_affected_rows($this->link);
}
//数据库的文本错误提示
function error() {
return (($this->link) ? mysql_error($this->link) : mysql_error());
}
//返回上一个 MySQL 操作中的错误信息的数字编码
function errno() {
return intval(($this->link) ? mysql_errno($this->link) : mysql_errno());
}
//返回数据库操作结果
function result($query, $row = 0) {
$query = @mysql_result($query, $row);
return $query;
}
//返回数据库查询等操作的数目
function num_rows($query) {
$query = mysql_num_rows($query);
return $query;
}
//取得结果集中字段的数目
function num_fields($query) {
return mysql_num_fields($query);
}
//释放结果内存
function free_result($query) {
return mysql_free_result($query);
}
//取得上一步 INSERT 操作产生的 ID
function insert_id() {
return ($id = mysql_insert_id($this->link)) >= 0 ? $id : $this->result($this->query(SELECT last_insert_id()), 0);
}
//以数组的形式返回查询结果
function fetch_row($query) {
$query = mysql_fetch_row($query);
return $query;
}
//从结果集中取得列信息并作为对象返回
function fetch_fields($query) {
return mysql_fetch_field($query);
}
//获取Mysql的版本
function version() {
if(empty($this->version)) {
$this->version = mysql_get_server_info($this->link);
}
return $this->version;
}
//关闭连接
function close() {
return mysql_close($this->link);
}
//错误提示
function halt($message = , $sql = ) {
define(CACHE_FORBIDDEN, TRUE);
require_once WEB_ROOT . ./include/db_mysql_error.inc.php;
}
}
?>