?? class.php
字號:
<?php
//!function_exists('readover') && exit('Forbidden');
Class DB {
var $query_num = 0;
function DB($dbhost, $dbuser, $dbpw, $dbname, $pconnect = 0) {
$this->connect($dbhost, $dbuser, $dbpw, $dbname, $pconnect);
}
function connect($dbhost, $dbuser, $dbpw, $dbname, $pconnect = 0) {
if($pconnect==1 && !@mysql_pconnect($dbhost, $dbuser, $dbpw)){
$this->halt("Pconnect to MySQL ($dbhost,$dbuser) failed");
}elseif(!@mysql_connect($dbhost, $dbuser, $dbpw)){
$this->halt("Connect to MySQL ($dbhost,$dbuser) failed");
}
if($dbname) {
if (!@mysql_select_db($dbname)){
$this->halt('Cannot use database '.$dbname);
}
}
}
function close() {
return mysql_close();
}
function select_db($dbname){
if (!@mysql_select_db($dbname)){
$this->halt('Cannot use database '.$dbname);
}
}
function query($SQL, $method='') {
//$GLOBALS['PW']=='pw_' or $SQL=str_replace('pw_',$GLOBALS['PW'],$SQL);
if($method=='U_B' && function_exists('mysql_unbuffered_query')){
$query = mysql_unbuffered_query($SQL);
}else{
$query = mysql_query($SQL);
}
//$this->query_num++;
//echo $SQL.'<br>'.$this->query_num.'<br>';
if (!$query) $this->halt('Query Error: ' . $SQL);
return $query;
}
function get_one($SQL){
$query=$this->query($SQL,'U_B');
$rs =& mysql_fetch_array($query, MYSQL_ASSOC);
return $rs;
}
function update($SQL) {
$GLOBALS['PW']=='pw_' or $SQL=str_replace('pw_',$GLOBALS['PW'],$SQL);
if($GLOBALS['db_lp']==1){
if(substr($SQL,0,7)=='REPLACE'){
$SQL=substr($SQL,0,7).' LOW_PRIORITY'.substr($SQL,7);
} else{
$SQL=substr($SQL,0,6).' LOW_PRIORITY'.substr($SQL,6);
}
}
if(function_exists('mysql_unbuffered_query')){
$query = mysql_unbuffered_query($SQL);
}else{
$query = mysql_query($SQL);
}
$this->query_num++;
//echo $SQL.'<br>'.$this->query_num.'<br>';
if (!$query) $this->halt('Update Error: ' . $SQL);
return $query;
}
function fetch_array($query, $result_type = MYSQL_ASSOC) {
return mysql_fetch_array($query, $result_type);
}
function affected_rows() {
return mysql_affected_rows();
}
function num_rows($query) {
$rows = mysql_num_rows($query);
return $rows;
}
function free_result($query) {
return mysql_free_result($query);
}
function insert_id() {
$id = mysql_insert_id();
return $id;
}
function halt($msg='') {
require_once('db_error.php');
new DB_ERROR($msg);
}
}
?>
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