分析uchome数据库类

概述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, $dbuser, $dbpw)) {$halt && $this->halt('Can not connect to MySQL server');}} else {if(!$this->link = @mysql_connect($dbhost, $dbuser, $dbpw, 1)) {$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);}/*** 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.'<br/>';return $query;}/*** 取得前一次 *** 作影响的记录数** @return int*/function affected_rows() {return mysql_affected_rows($this->link);}/*** 返回mysql *** 作产生的错误信息** @return string*/function error() {return (($this->link) ? mysql_error($this->link) : mysql_error());}/*** 返回mysql *** 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 position:absolute;font-size:11px;font-family:verdana,arial;background:#EBEBEB;padding:0.5em;"><b>MySQL Error</b><br><b>Message</b>: $message<br><b>SQL</b>: $sql<br><b>Error</b>: $dberror<br><b>Errno.</b>: $dberrno<br><a href="$help_link" target="_blank">Click here to seek help.</a></div>";exit();}}

<pre >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(!$this-><a href="https://m.jb51.cc/tag/link/" target="_blank" >link</a> = @<a href="https://www.jb51.cc/tag/MysqL/" target="_blank" >MysqL</a>_pconnect($dbhost,$dbpw)) {            $halt &amp;&amp; $this->halt('Can not connect to <a href="https://www.jb51.cc/tag/MysqL/" target="_blank" >MysqL</a> server');        }    } else {        if(!$this-><a href="https://m.jb51.cc/tag/link/" target="_blank" >link</a> = @<a href="https://www.jb51.cc/tag/MysqL/" target="_blank" >MysqL</a>_connect($dbhost,1)) {            $halt &amp;&amp; $this->halt('Can not connect to <a href="https://www.jb51.cc/tag/MysqL/" target="_blank" >MysqL</a> server');        }    }    if($this->version() > '4.1') {        if($this->charset) {            @<a href="https://www.jb51.cc/tag/MysqL/" target="_blank" >MysqL</a>_<a href="https://m.jb51.cc/tag/query/" target="_blank" >query</a>("SET ch<a href="https://www.jb51.cc/tag/ara/" target="_blank" >ara</a>cter_set_connection=$this->charset,ch<a href="https://www.jb51.cc/tag/ara/" target="_blank" >ara</a>cter_set_res<a href="https://m.jb51.cc/tag/ul/" target="_blank" >ul</a>ts=$this->charset,ch<a href="https://www.jb51.cc/tag/ara/" target="_blank" >ara</a>cter_set_cl<a href="https://m.jb51.cc/tag/IE/" target="_blank" >IE</a>nt=binary",$this-><a href="https://m.jb51.cc/tag/link/" target="_blank" >link</a>);        }        if($this->version() > '5.0.1') {            @<a href="https://www.jb51.cc/tag/MysqL/" target="_blank" >MysqL</a>_<a href="https://m.jb51.cc/tag/query/" target="_blank" >query</a>("SET <a href="https://www.jb51.cc/tag/sqlmode/" target="_blank" >sql_mode</a>=''",$this-><a href="https://m.jb51.cc/tag/link/" target="_blank" >link</a>);        }    }    //<a href="https://m.jb51.cc/tag/xuanze/" target="_blank" >选择</a><a href="https://www.jb51.cc/tag/shujuku/" target="_blank" >数据库</a>    if($db<a href="https://m.jb51.cc/tag/name/" target="_blank" >name</a>) {        @<a href="https://www.jb51.cc/tag/MysqL/" target="_blank" >MysqL</a>_select_db($db<a href="https://m.jb51.cc/tag/name/" target="_blank" >name</a>,$this-><a href="https://m.jb51.cc/tag/link/" target="_blank" >link</a>);    }}/** * <a href="https://m.jb51.cc/tag/xuanze/" target="_blank" >选择</a><a href="https://www.jb51.cc/tag/shujuku/" target="_blank" >数据库</a> * * @p<a href="https://www.jb51.cc/tag/ara/" target="_blank" >ara</a>m string $db<a href="https://m.jb51.cc/tag/name/" target="_blank" >name</a> * @return bo<a href="https://m.jb51.cc/tag/ol/" target="_blank" >ol</a> */function select_db($db<a href="https://m.jb51.cc/tag/name/" target="_blank" >name</a>) {    return <a href="https://www.jb51.cc/tag/MysqL/" target="_blank" >MysqL</a>_select_db($db<a href="https://m.jb51.cc/tag/name/" target="_blank" >name</a>,$this-><a href="https://m.jb51.cc/tag/link/" target="_blank" >link</a>);}

<pre >/**

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(); $info = <a href="https://www.jb51.cc/tag/MysqL/" target="_blank" >MysqL</a>_info(); if($<a href="https://m.jb51.cc/tag/query/" target="_blank" >query</a> &amp;&amp; preg_match("/^(select )/i",$<a href="https://www.jb51.cc/tag/sql/" target="_blank" >sql</a>)) {     $explain = <a href="https://www.jb51.cc/tag/MysqL/" target="_blank" >MysqL</a>_fetch_assoc(<a href="https://www.jb51.cc/tag/MysqL/" target="_blank" >MysqL</a>_<a href="https://m.jb51.cc/tag/query/" target="_blank" >query</a>('EXPLAIN '.$<a href="https://www.jb51.cc/tag/sql/" target="_blank" >sql</a>,$this-><a href="https://m.jb51.cc/tag/link/" target="_blank" >link</a>)); } $_SGLOBAL['de<a href="https://m.jb51.cc/tag/BUG/" target="_blank" >BUG</a>_<a href="https://m.jb51.cc/tag/query/" target="_blank" >query</a>'][] = array('<a href="https://www.jb51.cc/tag/sql/" target="_blank" >sql</a>'=>$<a href="https://www.jb51.cc/tag/sql/" target="_blank" >sql</a>,'time'=>$<a href="https://www.jb51.cc/tag/sql/" target="_blank" >sql</a>time,'info'=>$info,'explain'=>$explain);

}
$this->querynum++;
$this->sqls[] = $this->querynum.' '.$sql.'
';
return $query;
}

/**

取得前一次 *** 作影响的记录数

@return int
*/
function affected_rows() {
return MysqL_affected_rows($this->link);
}

link) ? MysqL_error($this->link) : MysqL_error()); }
/**
返回MysqL  *** 作参数的错误信息的编号@return int
*/
function errno() {
return intval(($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 = MysqLinsertID($this->link)) >= 0 ? $ID : $this->result($this->query("SELECT lastinsertID()"),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."; exit();}}

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