time = $time;
$this->tablepre = $tablepre;
if(!$this->link = mysqli_connect($dbhost, $dbuser, $dbpw, $dbname)) {
$this->halt('无法连接数据库!');
}
if($this->version() > '4.1') {
if($dbcharset) {
mysqli_query($conn,"SET character_set_connection=".$dbcharset.", character_set_results=".$dbcharset.", character_set_client=binary", $this->link);
}
if($this->version() > '5.0.1') {
mysqli_query($conn,"SET sql_mode=''", $this->link);
}
}
}
function cache_gc() {
$this->query("DELETE FROM {$this->tablepre}sqlcaches WHERE expiry<$this->time");
}
function query($sql, $type = '', $cachetime = FALSE) {
$func = $type == 'UNBUFFERED' && @function_exists('mysqli_unbuffered_query') ? 'mysqli_unbuffered_query' : 'mysqli_query';
if(!($query = $func($sql, $this->link)) && $type != 'SILENT') {
$this->halt('SQL:', $sql);
}
$this->querynum++;
$this->histories[] = $sql;
return $query;
}
function error() {
return (($this->link) ? mysqli_error($this->link) : mysqli_error($this->link));
}
function errno() {
return intval(($this->link) ? mysqli_errno($this->link) : mysqli_errno($this->link));
}
function result($query, $row) {
$query = @mysqli_result($query, $row);
return $query;
}
function version() {
return mysqli_get_server_info($this->link);
}
function close() {
return mysqli_close($this->link);
}
function halt($message = '', $sql = '') {
show_msg('run_sql_error', $message.$sql.'
Error:'.$this->error().'
Errno:'.$this->errno(), 0);
}
}
?>