php数据库操作--数据预处理、更新、删除

$createinto=$connent->prepare("insert into zh(name,age,email) values (?,?,?)");

//绑定  
$createinto->bind_param("sis",$name,$age,$email);

$name="zhanghao1";  
$age=1;  
$email="1234123123@qq.com";  
$createinto->execute();  
  
$name="zhanghao2";  
$age=2;  
$email="1234123123@qq.com";  
$createinto->execute();

mysqli_query($connent,"delete from zh where name='zhanghao1'");

mysqli_query($connent,"update zh set age=3 where name='zhanghao2'");

connect_error){  
    die("连接失败: " . $connent->connect_error);  
}else{  
    echo "成功";  
  
}  
//创建预处理  
$createinto=$connent->prepare("insert into zh(name,age,email) values (?,?,?)");  
  
//绑定  
$createinto->bind_param("sis",$name,$age,$email);  
//多次执行  
$name="zhanghao1";  
$age=1;  
$email="1234123123@qq.com";  
$createinto->execute();  
  
$name="zhanghao2";  
$age=2;  
$email="1234123123@qq.com";  
$createinto->execute();  
echo "插入成功";  
  
//删除数据 删除表中 name为zhanghao1的数据  
mysqli_query($connent,"delete from zh where name='zhanghao1'");  
  
mysqli_query($connent,"update zh set age=3 where name='zhanghao2'");  
  
$connent->close();  
?>