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(); require ‘./config.inc.php’; $this->connect($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’; } } ?> 所有的赏赐都只是被用来奖励工作成果的。