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   ";    exit();}else{    echo "Host information:".mysqli_get_host_info($conn);    mysqli_close($conn);}

   ";    exit();}else{    $sql = "create table tb_test(id int auto_increment primary key,testfield varchar(75) not null)";    $result = mysqli_query($conn,$sql);    if($result === true)    {        echo "Talbe tb_test is created."."
";    }    else    {        echo "could not create table:".mysqli_error($conn);    }    mysqli_close($conn);}

   ";    exit();}else{    $sql = "insert into tb_test(testfield) values('some value')";    $result = mysqli_query($conn,$sql);    if($result === true)    {        echo " a record has been inserted."."
";    }    else    {        echo "could not insert record.".mysqli_error($conn)."
";    }    mysqli_close($conn);}

        
   
        
    
Text to Add:
        
        
    Insert Record    
   
   ";        exit();    }    else    {        if(empty($_POST['testfield']))        {            echo 'please fill right words.'."
";            return;        }        $clean_text =@mysqli_real_escape_string($conn,$_POST['testfield']);        $sql = "insert into tb_test(testfield) values('$clean_text')";        $result = mysqli_query($conn,$sql);        if($result === true)        {            echo 'insert ok.'."
";        }        else        {            echo "could not insert record.".mysqli_error($conn);        }        mysqli_close($conn);    }?>