discuz7 phpMysql操作类

PHP 2018-12-30

<div class="codetitle"><a style="CURSOR: pointer" data="81834" class="copybut" id="copybut81834" onclick="doCopy('code81834')"> 代码如下:

<div class="codebody" id="code81834">
<?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,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,5) != 'RETRY') {
$this->close();
require './config.inc.PHP';
$this->connect($dbhost,$pconnect,true,$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 WEBROOT . './include/dbMysqL_error.inc.PHP';
}
}
?>

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