<pre class="brush:php">class dbstuff {
var $querynum = 0;
var $link;
var $charset;
var $sqls = array(); //自己添加，存储所有执行的sql语句 uican 2009-12-09
/**
* 连接数据库
*
* @param string $dbhost
* @param string $dbuser
* @param string $dbpw
* @param string $dbname
* @param int $pconnect 0为非持久连接 1为持久连接
* @param bool $halt
*/
function connect($dbhost,$dbuser,$dbpw,$dbname = '',$pconnect = 0,$halt = TRUE) {
if($pconnect) {
if(!$this->link = @mysql_pconnect($dbhost,$dbpw)) {
$halt && $this->halt('Can not connect to MySQL server');
}
} else {
if(!$this->link = @mysql_connect($dbhost,1)) {
$halt && $this->halt('Can not connect to MySQL server');
}
}
if($this->version() > '4.1') {
if($this->charset) {
@mysql_query("SET character_set_connection=$this->charset,character_set_results=$this->charset,character_set_client=binary",$this->link);
}
if($this->version() > '5.0.1') {
@mysql_query("SET sql_mode=''",$this->link);
}
}
//选择数据库
if($dbname) {
@mysql_select_db($dbname,$this->link);
}
}
/**
* 选择数据库
*
* @param string $dbname
* @return bool
*/
function select_db($dbname) {
return mysql_select_db($dbname,$this->link);
}<pre class="brush:php">/**
- 获取查询的数组
- @param object $query
- @param string $result_type MYSQL_ASSOC 只得到关联索引,MYSQL_NUM 只得到数字索
- @return array
*/
function fetch_array($query,$result_type = MYSQL_ASSOC) {
return mysql_fetch_array($query,$result_type);
}
/**
-
执行一条sql语句
-
@param string $sql
-
@param string $type 如果$type为UNBUFFERED:则执行mysql_unbuffered_query();他与mysql_query的区别是，执行后不获取和缓存结果的行
-
@return object
/
function query($sql,$type = '') {
if(D_BUG) {
global $_SGLOBAL;
$sqlstarttime = $sqlendttime = 0;
$mtime = explode(' ',microtime());
$sqlstarttime = number_format(($mtime[1] + $mtime[0] - $_SGLOBAL['supe_starttime']),6) 1000;
}
$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);
}
if(D_BUG) {
$mtime = explode(' ',microtime());
$sqlendttime = number_format(($mtime[1] + $mtime[0] - $_SGLOBAL['supe_starttime']),6) * 1000;
$sqltime = round(($sqlendttime - $sqlstarttime),3);$explain = array(); $info = mysql_info(); if($query && preg_match("/^(select )/i",$sql)) { $explain = mysql_fetch_assoc(mysql_query('EXPLAIN '.$sql,$this->link)); } $_SGLOBAL['debug_query'][] = array('sql'=>$sql,'time'=>$sqltime,'info'=>$info,'explain'=>$explain);}
$this->querynum++;
$this->sqls[] = $this->querynum.' '.$sql.'
';
return $query;
}
/**
-
取得前一次操作影响的记录数
-
@return int
*/
function affected_rows() {
return mysql_affected_rows($this->link);
}link) ? mysql_error($this->link) : mysql_error()); }
/**
- 返回mysql 操作参数的错误信息的编号
- @return int
*/
function errno() {
return intval(($this->link) ? mysql_errno($this->link) : mysql_errno());
}
/**
- 取得指定结果集
- @param object $query
- @param int $row
- @return string
*/
function result($query,$row) {
$query = @mysql_result($query,$row);
return $query;
}
/**
- 取得结果集的行数
- @param object $query
- @return int
*/
function num_rows($query) {
$query = mysql_num_rows($query);
return $query;
}
/**
- 取得结果集的字段数
- @param object $query
- @return int
*/
function num_fields($query) {
return mysql_num_fields($query);
}
/**
- 释放结果内存
- @param object $query
- @return bool
*/
function free_result($query) {
return mysql_free_result($query);
}
/**
- 取得上一步插入的id
- @return int
*/
function insert_id() {
return ($id = mysql_insert_id($this->link)) >= 0 ? $id : $this->result($this->query("SELECT last_insert_id()"),0);
}
/**
- 从查询结果中取一条记录
- @param object $query
- @return array
*/
function fetch_row($query) {
$query = mysql_fetch_row($query);
return $query;
}
/**
- 从查询结果中获取列信息
- @param object $query
- @return array
*/
function fetch_fields($query) {
return mysql_fetch_field($query);
}
/**
- Enter 获取mysql 数据库版本
- @return string
*/
function version() {
return mysql_get_server_info($this->link);
}
/**
- 关闭数据库
- @return bool
*/
function close() {
return mysql_close($this->link);
}
/**
- 错误提示
- @param string $message
- @param string $sql
*/
function halt($message = '',$sql = '') {
$dberror = $this->error();
$dberrno = $this->errno();
$help_link = "http://faq.comsenz.com/?type=mysql&dberrno=".rawurlencode($dberrno)."&dberror=".rawurlencode($dberror);
echo "<div style=\"position:absolute;font-size:11px;font-family:verdana,arial;background:#EBEBEB;padding:0.5em;\">
MySQL Error
Message: $message
SQL: $sql
Error: $dberror
Errno.: $dberrno
<a href=\"$help_link\" target=\"_blank\">Click here to seek help.