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-<?php
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-
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-// 淘汰掉这个, 保留单一的MySQL操作入口: daoInst(). --gwang 2020年11月9日13:58:03
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-//
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-//namespace loyalsoft;
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-//
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-///**
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-// * CDB工具类[APHP三大操作单元之一]
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-// * @version 2.0.1 gwang 修补了部分mysqli方法 2020.3.25
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-// * 2.0 gwang 升级到mysqli,以便能在PHP7.0以后的环境下继续运行. 约 2017
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-// * 1.0 jgao created 约 2013
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-// * @author jgao,gwang
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-// */
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-//class CDbUtil {
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-//
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-// public $conn = 0;
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-//
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-// public function dbconn($dbhost, $dbport, $dbuser, $dbpw, $dbname) {
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-// $this->conn = mysqli_connect($dbhost, $dbuser, $dbpw, $dbname, $dbport, true);
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-// !$this->conn && $this->halt("Connect to MySQL failed");
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-// $serverinfo = mysqli_get_server_info($this->conn);
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-// if ($serverinfo > '4.1' && $GLOBALS['charset']) {
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-// mysqli_query($this->conn, "SET character_set_connection=" . $GLOBALS['charset'] . ",character_set_results=" . $GLOBALS['charset'] . ",character_set_client=binary");
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-// }
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-// if ($serverinfo > '5.0') {
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-// mysqli_query($this->conn, "SET sql_mode=''");
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-// }
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-// if ($dbname && !mysqli_select_db($this->conn, $dbname)) {
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-// $this->halt('Cannot use database');
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-// }
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-// }
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-//
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-// /**
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-// * 切换db
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-// * @param type $dbname
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-// */
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-// public function select_db($dbname) {
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-// if (!mysqli_select_db($this->conn, $dbname)) {
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-// $this->halt('Cannot use database');
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-// }
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-// }
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-//
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-// /**
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-// * 调取服务器信息
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-// * @return type
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-// */
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-// public function server_info() {
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-// return mysqli_get_server_info($this->conn);
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-// }
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-//
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-// /**
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-// * 最后一次执行insert时插入的第一行记录Id,(如果一次插入3条记录,则得到第一条的记录)
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-// * 所以,这个如何用要慎重(gwang)
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-// * @return type
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-// */
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-// public function insert_id() {
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-// $arr = $this->fetch_array('SELECT LAST_INSERT_ID() as id');
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-// return $arr["id"];
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-// }
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-//
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-// /**
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-// * 直接取查询结果的某行某列的数值
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-// * @param type $SQL
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-// * @param type $offset
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-// * @param type $field
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-// * @return boolean
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-// */
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-// public function get_value($SQL, $offset = 0, $field = 0) {
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-// $rt = $this->fetch_result($SQL);
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-// if (isset($rt[$offset][$field])) {
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-// return $rt[$offset][$field];
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-// }
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-// return false;
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-// }
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-//
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-// /**
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-// * 执行查询
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-// * @param type $SQL
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-// * @param type $method
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-// * @param type $error
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-// * @return mixed
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-// */
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-// public function query($SQL, $method = null, $error = true) {
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-// $query = mysqli_query($this->conn, $SQL);
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-// !$query && $error && $this->halt('Query Error: ' . $SQL);
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-// return $query;
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-// }
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-//
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-// /**
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-// * 执行更新的时候加上事物逻辑
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-// * @param type $SQL
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-// * @return int errno
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-// */
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-// public function safeQuery($SQL) {
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-// mysqli_query($this->conn, 'start transaction');
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-// mysqli_query($this->conn, 'SET autocommit=0');
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-// $query = mysqli_query($this->conn, $SQL);
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-// $err = mysqli_errno($this->conn);
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-// if ($err && !$query) {
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-// mysqli_query($this->conn, 'rollback');
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-// } else {
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-// mysqli_query($this->conn, 'commit');
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-// }
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-// mysqli_query($this->conn, 'SET autocommit=1');
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-// return $err;
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-// }
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-//
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-// /**
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-// * 将查询结果作为索引数组返回
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-// * @param string $SQL
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-// * @return array
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-// */
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-// public function fetch_row($SQL) {
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-// return $this->fetch_result($SQL, MYSQLI_NUM);
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-// }
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-//
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-// /**
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-// * 将查询结果作为关联数组返回
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-// * @param string $SQL
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-// * @return array
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-// */
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-// public function fetch_array($SQL) {
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-// return $this->fetch_result($SQL, MYSQLI_ASSOC);
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-// }
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-//
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-// /**
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-// * 从结果中取一行作为结果返回
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-// * @param string $SQL
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-// * @param int $result_type 1. 关联数组, 2. 索引数组, 3 both
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-// * @return type
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-// */
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-// public function fetch_result($SQL, $result_type = MYSQLI_BOTH) {
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-// $arr = array();
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-// $query = $this->query($SQL);
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-// $data = mysqli_fetch_array($query, $result_type);
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-// while ($data) {
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-// $arr[] = $data;
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-// $data = mysqli_fetch_array($query, $result_type);
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-// }
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-// $this->free_result();
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-// return $arr;
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-// }
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-//
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-// /**
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-// * 调取查询影响的行数
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-// * @return type
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-// */
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-// public function affected_rows() {
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-// return mysqli_affected_rows($this->conn);
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-// }
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-//
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-// /**
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-// * 调取结果集中行的数目
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-// * @param type $SQL
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-// * @return int
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-// */
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-// public function num_rows($SQL) {
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-// $query = $this->query($SQL);
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-// if (!is_bool($query)) {
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-// return mysqli_num_rows($query);
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-// }
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-// return 0;
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-// }
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-//
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-// /**
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-// * 调取结果集中字段数量
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-// * @param type $SQL
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-// * @return type
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-// */
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-// public function num_fields($SQL) {
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-// $query = $this->query($SQL);
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-// return mysqli_num_fields($query);
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-// }
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-//
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-// /**
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-// * 封装SQL字符串中特殊字符,以免SQL语句执行失败.
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-// * @param type $str 带有风险字符的SQL语句或者字符串
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-// * @return type 处理后的字符串
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-// */
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-// public function escape_string($str) {
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-// return mysqli_real_escape_string($this->conn, $str);
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-// }
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-//
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-// /**
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-// * 释放SQL查询结果
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-// */
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-// public function free_result() {
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-// $void = func_get_args();
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-// foreach ($void as $query) {
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-// if (is_resource($query) && get_resource_type($query) === 'mysql result') {
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-// mysqli_free_result($query);
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-// }
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-// }
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-// unset($void);
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-// }
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-//
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-// /**
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-// * 关闭当前实例的连接
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-// * @return type
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-// */
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-// public function close() {
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-// $this->free_result();
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-// return mysqli_close($this->conn);
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-// }
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-//
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-// /**
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-// * 直接报错退出
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-// * @param type $msg
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-// */
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-// public function halt($msg = null) {
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-// exit($msg . '<br /><br />' . mysqli_error($this->conn));
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-// }
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-//
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-//}
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