mysqli扩展库应用---批量执行sql语句

1， mysqli批量执行sql语句。基本语法：

$sqls=”sql1;sql2;………”

mysqli::multi_query($sqls);

同一个$sqls要么是增删改语句集合，要么是查询语句的集合，查询语句和增删改最好不要混合。应用示例如下：

① 操作数据库的代码：

<?php
class mysqliMutiTool{
    private $mysqli = null;
    private static $host = "127.0.0.1";
    private static $user = "root";
    private static $password = "123456";
    private static $db = "test";

    public function __construct(){
        $this->mysqli = new MySQLi(self::$host,self::$user,self::$password,self::$db);
        if($this->mysqli->connect_error){
            die("连接错误".$this->mysqli->connect_error);
        }
//        $this->mysqli->muti_query("set names utf-8");
    }

    public function execute_query($sqls){
        $res = $this->mysqli->multi_query($sqls);
        return $res;
    }

    public function getError(){
        return $this->mysqli->error;
    }

    public function getMysqli(){
        return $this->mysqli;
    }

    public function closeConn(){
        $this->mysqli->close();
    }

}

　　

② 增删改操作

<?php
require "mysqliMutiTool.class.php";

$mysqliMuti = new mysqliMutiTool();
$sqls = "insert into user1 (name,password,email,age) values('宋江','aaa','songjiang@126.com',56);";
$sqls .= "insert into user1 (name,password,email,age) values('卢俊义','bbb','lujunyi@126.com',46);";
$sqls .= "insert into user1 (name,password,email,age) values('吴用','ccc','wuyong@126.com',54);";
$sqls .= "update user1 set name = '吴用2' where id = 12;";
$sqls .= "delete from user1 where id = 15;";
$res = $mysqliMuti->execute_query($sqls);
if($res){
    echo "操作成功！";
}else{
    echo "".$mysqliMuti->getError();
}
$mysqliMuti->closeConn();

　　

③ 查询操作

<?php
require "mysqliMutiTool.class.php";

$mysqliMuti = new mysqliMutiTool();
$sqls = "select * from user1;";
$sqls .= "select * from words;";

$res = $mysqliMuti->execute_query($sqls);

$mysqli = $mysqliMuti->getMysqli();
if($res){
    do{
        //从mysqli连接取出第一个结果集
        $result = $mysqli->store_result();
        //显示mysqli result对象
        while($row=$result->fetch_row()){
            foreach($row as $key=>$val){
                echo "--$val";
            }
            echo "<br/>";
        }
        $result->free();
        echo "<br/>*******************新的结果集*******************<br/>";
    }while($mysqli->next_result());
}
$mysqliMuti->closeConn();