<p>数据库操作类 要看的<br />
<!--?php<br /--> class dbstuff {<br />
var $querynum = 0;<br />
var $link;<br />
var $histories;<br />
var $time;<br />
var $tablepre;<br />
<br />
function connect($dbhost, $dbuser, $dbpw, $dbname = '', $dbcharset, $pconnect = 0, $tablepre='', $time = 0) {<br />
$this->time = $time;<br />
$this->tablepre = $tablepre;<br />
if($pconnect) {<br />
if(!$this->link = mysql_pconnect($dbhost, $dbuser, $dbpw)) {<br />
$this->halt('Can not connect to MySQL server');<br />
}<br />
} else {<br />
if(!$this->link = mysql_connect($dbhost, $dbuser, $dbpw, 1)) {<br />
$this->halt('Can not connect to MySQL server');<br />
}<br />
}<br />
<br />
if($this->version() > '4.1') {<br />
if($dbcharset) {<br />
mysql_query("SET character_set_connection=".$dbcharset.", character_set_results=".$dbcharset.", character_set_client=binary", $this->link);<br />
}<br />
<br />
if($this->version() > '5.0.1') {<br />
mysql_query("SET sql_mode=''", $this->link);<br />
}<br />
}<br />
<br />
if($dbname) {<br />
mysql_select_db($dbname, $this->link);<br />
}<br />
<br />
}<br />
<br />
function fetch_array($query, $result_type = MYSQL_ASSOC) {<br />
return mysql_fetch_array($query, $result_type);<br />
}<br />
<br />
function result_first($sql) {<br />
$query = $this->query($sql);<br />
return $this->result($query, 0);<br />
}<br />
<br />
function fetch_first($sql) {<br />
$query = $this->query($sql);<br />
return $this->fetch_array($query);<br />
}<br />
<br />
function fetch_all($sql) {<br />
$arr = array();<br />
$query = $this->query($sql);<br />
while($data = $this->fetch_array($query)) {<br />
$arr[] = $data;<br />
}<br />
return $arr;<br />
}<br />
<br />
function cache_gc() {<br />
$this->query("DELETE FROM {$this->tablepre}sqlcaches WHERE expiry<$this->time");<br />
}<br />
<br />
function query($sql, $type = '', $cachetime = FALSE) {<br />
$func = $type == 'UNBUFFERED' && @function_exists('mysql_unbuffered_query') ? 'mysql_unbuffered_query' : 'mysql_query';<br />
if(!($query = $func($sql, $this->link)) && $type != 'SILENT') {<br />
$this->halt('MySQL Query Error', $sql);<br />
}<br />
$this->querynum++;<br />
$this->histories[] = $sql;<br />
return $query;<br />
}<br />
<br />
function affected_rows() {<br />
return mysql_affected_rows($this->link);<br />
}<br />
<br />
function error() {<br />
return (($this->link) ? mysql_error($this->link) : mysql_error());<br />
}<br />
<br />
function errno() {<br />
return intval(($this->link) ? mysql_errno($this->link) : mysql_errno());<br />
}<br />
<br />
function result($query, $row) {<br />
$query = @mysql_result($query, $row);<br />
return $query;<br />
}<br />
<br />
function num_rows($query) {<br />
$query = mysql_num_rows($query);<br />
return $query;<br />
}<br />
<br />
function num_fields($query) {<br />
return mysql_num_fields($query);<br />
}<br />
<br />
function free_result($query) {<br />
return mysql_free_result($query);<br />
}<br />
<br />
function insert_id() {<br />
return ($id = mysql_insert_id($this->link)) >= 0 ? $id : $this->result($this->query("SELECT last_insert_id()"), 0);<br />
}<br />
<br />
function fetch_row($query) {<br />
$query = mysql_fetch_row($query);<br />
return $query;<br />
}<br />
<br />
function fetch_fields($query) {<br />
return mysql_fetch_field($query);<br />
}<br />
<br />
function version() {<br />
return mysql_get_server_info($this->link);<br />
}<br />
<br />
function close() {<br />
return mysql_close($this->link);<br />
}<br />
<br />
function halt($message = '', $sql = '') {<br />
api_msg('run_sql_error', $message.'<br />
<br />
'.$sql.'<br />
'.mysql_error());<br />
}<br />
}<br />
?></p>