Query not inserting string data into table - php

Question

I am trying to insert some data into a MySQL database using PHP. The code I have works fine on localhost, but when I try it on my server the reg_user_id, reg_user_access_level and reg_user_status are inserted while all the other fields are not.
Please help, I've already wasted a day trying to sort this out.
everything up to here is fine
The PHP is:
else {
//sort the data
$reg_user_name = mysql_real_escape_string($_POST['reg_user_name']);
//create a salt for the password before encryption, use the same when retrieving the password!
$salt = 'mysalt';//not actually this
//first encryption
$reg_user_password = sha1($_POST['reg_user_password']);
//second encryption with salt
$reg_user_password = sha1($salt.$reg_user_password);
$reg_user_password = mysql_real_escape_string($reg_user_password);
/*** strip injection chars from email ***/
$reg_user_email = preg_replace( '((?:\n|\r|\t|%0A|%0D|%08|%09)+)i','',$_POST['reg_user_email']);
$reg_user_email = mysql_real_escape_string($reg_user_email);
//connect to the db
include '../-useful_scripts/php/mysqli_connect_dsnydesign.php';
//check the connection
if($dbc) {
/*** check for existing username and email ***/
$query = "SELECT reg_user_name, reg_user_email FROM reg_users WHERE reg_user_name = '{$reg_user_name}' OR reg_user_email = '{$reg_user_email}';";
$result = mysqli_query($dbc, $query);
$row = mysqli_fetch_row($result);
if (sizeof($row) > 0) {
foreach($row as $value) {
echo $value.'<br>';
}
if($row[0] == $reg_user_name) {
$errors[] = 'Sorry, the username is already in use';
}
elseif($row[1] == $reg_user_email) {
$errors[] = 'This Email address is already subscribed';
}
mysqli_free_result($result);
}
else {
/*** create a verification code ***/
$verification_code = uniqid();
//set the query
$query = "INSERT INTO reg_users(reg_user_id, reg_user_name, reg_user_password, reg_user_email, reg_user_access_level, reg_user_status) VALUES (NULL, '$reg_user_name', '$reg_user_password', '$reg_user_email', '1', '$verification_code');";
//run the query
if(mysqli_query($dbc, $query)) {
just goes on to notify of submission after this.

Answer 1

Check that you are using the same PHP version number on your server and your localhost. mysql_real_escape_string has been deprecated in the latest version of PHP.