error in code

 <?php
Array
(
    [submission_id] => 4054583910592578526
    [formID] => 81683061136454
    [ip] => 125.63.69.50
    [name] => Array
        (
            [0] => shagun
            [1] =>
            [2] => vaish
        )

    [email] => vaish.shagun@gmail.com
    [mobile258] => +915848254;
    [agegroup] => 18-25 yr.
    [gender] => Female
    [occupation] => Business;
    [selectcountrystate] => Country: Algeria (DZ)
State: Burj Bu Arririj
City: No city on this state.
    [address] =>
)
function ExtendedAddslash(&$params)
{
        foreach ($params as &$var) {
            // check if $var is an array. If yes, it will start another ExtendedAddslash() function to loop to each key inside.
            is_array($var) ? ExtendedAddslash($var) : $var=addslashes($var);
            unset($var);
        }
}
ExtendedAddslash($_POST);


     $submission_id       = $_POST['submission_id'];
     $formID              = $_POST['formID'];
     $ip                  = $_POST['ip'];
     $name                = $_POST['name']['0'];$_POST['name']['1'];$_POST['name']['2'];
     $email               = $_POST['email'];
     $mobile258           = $_POST['mobile258'];
     $agegroup            = $_POST['agegroup'];
     $gender              = $_POST['gender'];
     $occupation          = $_POST['occupation'];
     $selectcountrystate  = $_POST['selectcountrystate'];
     $address             = $_POST['address'];

$db_host = 'localhost';
$db_username = 'root';
$db_password = '';
$db_name = 'yellowponies';
mysqli_connect( $db_host, $db_username, $db_password) or die(mysqli_error());
mysqli_select_db($db_name);



$query = "SELECT * FROM `donor_registration` WHERE `submission_id` = '$submission_id'";
$sqlsearch = mysqli_query($query);
$resultcount = mysqli_numrows($sqlsearch);

if ($resultcount > 0) {

    mysqli_query("UPDATE `donor_registration` SET
                                `name` = '$name',
                                `email` = '$email',
                                `mobile258` = '$mobile258',
                                `agegroup` = '$agegroup',
                                `gender` = '$gender'
                                `occupation` = '$occupation',
                                `selectcountrystate` = '$selectcountrystate',
                                `address` = '$address'
                             WHERE `submission_id` = '$submission_id'")
     or die(mysqli_error());

} else {

    mysqli_query("INSERT INTO `donor_registration` (submission_id, formID, IP,
                                                                          name, email, mobile258, agegroup, gender,occupation,selectcountrystate,address)
                               VALUES ('$submission_id', '$formID', '$ip',
                                                 '$name', '$email', '$mobile258', '$agegroup', '$gender','$occupation','$selectcountrystate','$address) ")
    or die(mysqli_error());

}
?>