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323 lines
9.2 KiB
323 lines
9.2 KiB
<?php
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require_once (MO_CONFIG_DIR . '/db_config.php');
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class DBAction {
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/*
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* Auth: ketter Date : 2019-10-28
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* 本类是用来调用数据库操作的
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* 利用单例模式创建一个业务逻辑的实例 客户可以通过getInstance方法来得到DBAction的实例
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* 在整个运行周期中，该实例只会被创建一次
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* 作为单例模式的需要，构造子方法被设置为private私有方法，不让客户端调用
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* 作为单例模式的需要，提供DBAction类型的私有变量让getInstance方法使用作为返回
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* 作为单例模式的需要，提供getInstance方法来为客户端得到DBAction的实例
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*/
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//属性
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public $mConnId; //连接标识
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private static $instances = null; //连接实例
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public function DBConnect() {
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$this->mConnId = mysqli_connect(MYSQL_SERVER, MYSQL_USER, MYSQL_PASSWORD,MYSQL_DATABASE,MYSQL_PORT);
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if (!$this->mConnId) {
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print " 连接数据库失败!可能是mysql数据库用户名或密码不正确!<br>";
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return false;
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}
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}
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public static function getInstance() {
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if (null == self :: $instances) {
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self :: $instances = new DBAction();
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self :: $instances->DBConnect();
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}
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mysqli_query(self :: $instances->mConnId,"SET NAMES 'UTF8'");
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mysqli_query(self :: $instances->mConnId,"SET SESSION time_zone = '+8:00'");
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return self :: $instances;
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}
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public function query($sql) {
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$result = mysqli_query($this->mConnId,$sql);
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return $result;
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}
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//查询
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public function select($sql) {
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$sql = trim($sql);
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if (empty ($sql)) {return;}
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$rs = $this->query($sql);
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if ((!$rs) || empty ($rs)) {return;}
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$data = array();
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while ($rd = mysqli_fetch_object($rs)) {
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$data[] = $rd;
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}
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mysqli_free_result($rs);
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return $data;
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}
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//查询
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public function selectOne($sql) {
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$sql = trim($sql);
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if (empty ($sql)) {return;}
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$rs = $this->query($sql);
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if ((!$rs) || empty ($rs)) {return;}
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$rd = mysqli_fetch_object($rs);
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mysqli_free_result($rs);
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return $rd;
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}
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//查询返回数组
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public function selectarray($sql){
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$sql = trim($sql);
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if (empty ($sql)) {return;}
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$rs = $this->query($sql);
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if ((!$rs) || empty ($rs)) {return;}
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$data = array();
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while($row = mysqli_fetch_array($rs)) {
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$data[] = $row;
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}
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mysqli_free_result($rs);
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return $data;
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}
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//查询返回影响行
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public function selectrow($sql) {
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$sql = trim($sql);
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if (empty ($sql)) {return -1;}
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$rs = $this->query($sql);
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if ((!$rs) || empty ($rs)) {return 0;}
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$num= mysqli_num_rows($rs);
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mysqli_free_result($rs);
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return $num;
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}
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//插入
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public function insert($sql, $return = "affectedrows") {
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$sql = trim($sql);
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if (empty ($sql)) {return -1;}
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$rs = $this->query($sql);
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if ($rs == false) {return -1;}
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if (strtolower($return) == "last_insert_id") {
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return mysqli_insert_id($this->mConnId);
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} else {
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return mysqli_affected_rows($this->mConnId);
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}
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}
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public function insert_array($arr,$database,$xs_sql = '',$return = ''){
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if(is_array($arr)){
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$sql = 'insert into '.$database . '(';
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foreach ($arr as $key => $value) {
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$sql.= $key.',';
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}
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$sql = rtrim($sql, ',').') values (';
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foreach ($arr as $key => $value) {
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if($value == 'CURRENT_TIMESTAMP'){
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$sql.= $value.',';
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}elseif(is_array($value)){
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return false;
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}elseif(is_object($value)){
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return false;
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}else{
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$sql.= '\''.$value.'\',';
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}
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}
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$sql = rtrim($sql, ',').')';
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if ($xs_sql) {
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echo $sql;
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}else{
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if ($return) {
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$res = $this->insert($sql,"last_insert_id");
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}else{
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$res = $this->insert($sql);
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}
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return $res;
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}
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}else{
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return false;
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}
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}
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//更新
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// return 成功，返回执行影响行数，失败，返回-1
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public function update($sql) {
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$sql = trim($sql);
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if (empty ($sql)) {return -1;}
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$rs = $this->query($sql);
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if ($rs == false) {return -1;}
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return mysqli_affected_rows($this->mConnId);
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}
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//删除
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// return 成功，返回执行影响行数，失败，返回-1
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public function delete($sql) {
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$sql = trim($sql);
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if (empty ($sql)) {return -1;}
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$rs = $this->query($sql);
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if ($rs == false) {return -1;}
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return mysqli_affected_rows($this->mConnId);
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}
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// return 成功，返回执行影响行数，失败，返回-1
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public function modify($arr,$database,$where,$xs_sql = '') {
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if(is_array($arr)){
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$sql = 'update '.$database . ' set ';
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foreach ($arr as $key => $value) {
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if($value == 'CURRENT_TIMESTAMP'){
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$sql.= $key.' = '.$value;
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}elseif(is_array($value)){
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return false;
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}elseif(is_object($value)){
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return false;
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}else{
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$sql.= $key.' = \''.$value.'\',';
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}
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}
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$sql = rtrim($sql, ',').' where ';
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if($where){
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$sql.= " $where";
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}else{
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$sql.= " 1=1";
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}
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if ($xs_sql) {
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echo $sql;
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}else{
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$res = $this->insert($sql);
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return $res;
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}
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}else{
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return false;
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}
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}
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/*
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* 预处理插入
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* $data 参数一般为数组
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*/
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public function preInsert($sql,$data) {
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$mysqli_stmt=$this->mConnId->prepare($sql);
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$callback = array($mysqli_stmt, 'bind_param');
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// 将参数类型描述加入数组
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array_unshift($data, $this->getParamTypeStr($data));
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call_user_func_array($callback, $this->refValues($data));
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if($mysqli_stmt->execute()){
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return $mysqli_stmt->insert_id;
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}else{
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return $mysqli_stmt->error;
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}
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}
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public function preUpdate($sql,$data) {
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$mysqli_stmt=$this->mConnId->prepare($sql);
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$callback = array($mysqli_stmt, 'bind_param');
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// 将参数类型描述加入数组
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array_unshift($data, $this->getParamTypeStr($data));
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call_user_func_array($callback, $this->refValues($data));
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if($mysqli_stmt->execute()){
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return $mysqli_stmt->affected_rows;
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}else{
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return $mysqli_stmt->error;
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}
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}
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private function getParamTypeStr($data){
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$count = count($data);
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$typestr = "";
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for($i = 0; $i<$count; $i++){
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$type = gettype($data[$i]);
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switch($type){
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case "integer":
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$typestr.= "i";
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break;
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case "float":
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case "double":
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$typestr.= "d";
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break;
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case "string":
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$typestr.= "s";
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break;
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}
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}
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return $typestr;
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}
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private function refValues($arr){
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if (version_compare(PHP_VERSION, '5.3.0') >= 0) {
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$refs = array();
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foreach($arr as $key => $value)
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$refs[$key] = &$arr[$key];
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return $refs;
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}
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return $arr;
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}
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/* 无需使用 */
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//使用mysql扩展查询,查询结束需手工释放结果集
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public function i_query($sql) {
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$sql = trim($sql);
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if (empty ($sql)) {return false;}
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$rs = mysqli_query($this->mConnId, $sql);
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return $rs;
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}
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/*关闭连接*/
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public function close() {
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mysqli_close($this->mConnId);
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}
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/* 事务处理函数 */
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public function begin() {
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return $this->query("START TRANSACTION");
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}
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public function commit() {
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return $this->query("COMMIT");
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}
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public function rollback() {
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return $this->query("ROLLBACK");
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}
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public function transaction($q_array) {
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$retval = 1;
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$this->begin();
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foreach ($q_array as $qa) {
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$result = $this->query($qa);
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if ($result == false) {
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$retval = 0;
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break;
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}
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}
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if ($retval == 0) {
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$this->rollback();
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return false;
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} else {
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$this->commit();
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return true;
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}
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}
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// 管理员记录
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function admin_record($admin_name,$event,$type){
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$event = $admin_name . $event;
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$sql = "insert into lkt_admin_record(admin_name,event,type,add_date) values ('$admin_name','$event','$type',CURRENT_TIMESTAMP)";
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$this->insert($sql);
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return;
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}
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}
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?>
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