The behaviour of these functions is affected by settings in php.ini.
| Name | Default | Changeable | Changelog | 
|---|---|---|---|
| dbx.colnames_case | "unchanged" | PHP_INI_SYSTEM | Available since PHP 4.3.0. Removed in PHP 5.1.0. | 
Here's a short explanation of the configuration directives.
dbx.colnames_case
    string
   Columns names can be returned "unchanged" or converted to "uppercase" or "lowercase". This directive can be overridden with a flag to dbx_query().