SQL easy query

<?php
require_once('./config.php');
/*==========================
Execute Query Function
=========================*/


function sql_query($query_code) {
$db_config_server = DB_HOST;
$db_config_user = DB_USERNAME;
$db_config_password = DB_PASSWORD;
$db_config_db_name = DB_NAME;

$mysqli = new mysqli($db_config_server, $db_config_user, $db_config_password, $db_config_db_name);


$result = $mysqli->query($query_code);
//Return Query Result
return $result;
//Need to close conection
$mysqli->close();
    }

    /*=========================================
Execute Query Function and Return Connection
================================================*/

    function sql_conn($query_code){
$db_config_server = DB_HOST;
$db_config_user = DB_USERNAME;
$db_config_password = DB_PASSWORD;
$db_config_db_name = DB_NAME;
$mysqli = new mysqli($db_config_server, $db_config_user, $db_config_password, $db_config_db_name);

$mysqli->query($query_code);
return $mysqli;
//Need to close conection
$mysqli->close();
    }


/*==========================
Execute Query Function
=========================*/



    function sql_sf_query($query_code,$parameters_num, $parameters_type=null , $parameter1=null,$parameter2=null,$parameter3=null,$parameter4=null,$parameter5=null,$parameter6=null,$parameter7=null,$parameter8=null,$parameter9=null){

        $db_config_server = DB_HOST;
$db_config_user = DB_USERNAME;
$db_config_password = DB_PASSWORD;
$db_config_db_name = DB_NAME;
$conn = new mysqli($db_config_server, $db_config_user, $db_config_password, $db_config_db_name);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// prepare and bind
$stmt = $conn->prepare($query_code);
Switch($parameters_num){

    Case 1:
    $stmt->bind_param($parameters_type,$parameter1);
    break;
        Case 2:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2);
    break;
        Case 3:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2,$parameter3);
    break;
        Case 4:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2,$parameter3,$parameter4);
    break;
        Case 5:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2,$parameter3,$parameter4,$parameter5);
    break;
    Case 6:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2,$parameter3,$parameter4,$parameter5,$parameter6);
    break;
        Case 7:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2,$parameter3,$parameter4,$parameter5,$parameter6,$parameter7);
    break;
        Case 8:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2,$parameter3,$parameter4,$parameter5,$parameter6,$parameter7,$parameter8);
    break;
        Case 9:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2,$parameter3,$parameter4,$parameter5,$parameter6,$parameter7,$parameter8,$parameter9);
    break;
}


$stmt->execute();
$result = $stmt->get_result();
return $result;

$stmt->close();
$conn->close();

    }

            /*=========================================
Execute Safe Query Function and Return Connection
================================================*/



    function sql_conn_sf_query($query_code,$parameters_num, $parameters_type=null , $parameter1=null,$parameter2=null,$parameter3=null,$parameter4=null,$parameter5=null,$parameter6=null,$parameter7=null,$parameter8=null,$parameter9=null){

        $db_config_server = DB_HOST;
$db_config_user = DB_USERNAME;
$db_config_password = DB_PASSWORD;
$db_config_db_name = DB_NAME;
$conn = new mysqli($db_config_server, $db_config_user, $db_config_password, $db_config_db_name);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// prepare and bind
$stmt = $conn->prepare($query_code);
Switch($parameters_num){

    Case 1:
    $stmt->bind_param($parameters_type,$parameter1);
    break;
        Case 2:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2);
    break;
        Case 3:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2,$parameter3);
    break;
        Case 4:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2,$parameter3,$parameter4);
    break;
        Case 5:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2,$parameter3,$parameter4,$parameter5);
    break;
    Case 6:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2,$parameter3,$parameter4,$parameter5,$parameter6);
    break;
        Case 7:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2,$parameter3,$parameter4,$parameter5,$parameter6,$parameter7);
    break;
        Case 8:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2,$parameter3,$parameter4,$parameter5,$parameter6,$parameter7,$parameter8);
    break;
        Case 9:
    $stmt->bind_param($parameters_type,$parameter1,$parameter2,$parameter3,$parameter4,$parameter5,$parameter6,$parameter7,$parameter8,$parameter9);
    break;
}


$stmt->execute();

return $stmt;

$stmt->close();
$conn->close();

    }


    ?>