是否可以像这样缩短mysqli真正的转义字符串函数？ PHP

I am programming procedurally with mysqli connection (i will learn OOP for this, but now i need to know it in the procedural way) and i have to use mysqli_real_escape_string TONS of times in order to protect every query.

I just made this function after the connection happens in order to take less space (more organized) and time to write each:

$con = @mysqli_connect($mysql_server, $mysql_user, $mysql_password, $mysql_database);

function sql_escape($string) {
    global $con;
    return mysqli_real_escape_string($con, $string);    
}

Is this okay? I've read that globalizing variables is not good, i don't see why i couldn't do this.

Thanks in advance!

looks OK as long as you only use one database connection in your script.

globals are bad style? Well, it's php code which is an automatic negative 5 points to start with :)