//Check for SQLi everywhere

foreach($_POST as $key => $value)
{
    if (strpos($value,';') or strpos($value,"`") or strpos($value,"'"))
    {
        die ('Please refrain from using a semicolon (;), single quote (\') or a backtick (`). Due to a technical error there are certain scenarios where this could cause the database to do unwanted things. Fixing this is on my high-priority list and will be done soon.');
    }
}

foreach($_GET as $key => $value)
{
    if (strpos($value,';') or strpos($value,"`"))
    {
        die ('Please refrain from using a semicolon (;), single quote (\') or a backtick (`). Due to a technical error there are certain scenarios where this could cause the database to do unwanted things. Fixing this is on my high-priority list and will be done soon.');
    }
}