&reftitle.constants; &extension.constants;

`DBX_MYSQL` (`integer`)

`DBX_ODBC` (`integer`)

`DBX_PGSQL` (`integer`)

`DBX_MSSQL` (`integer`)

`DBX_FBSQL` (`integer`)

`DBX_OCI8` (`integer`) (available from PHP 4.3.0)

`DBX_SYBASECT` (`integer`)

`DBX_SQLITE` (`integer`) (PHP 5)

`DBX_PERSISTENT` (`integer`)

`DBX_RESULT_INFO` (`integer`)

`DBX_RESULT_INDEX` (`integer`)

`DBX_RESULT_ASSOC` (`integer`)

`DBX_RESULT_UNBUFFERED` (`integer`) (PHP 5)

`DBX_COLNAMES_UNCHANGED` (`integer`) (available from PHP 4.3.0)

`DBX_COLNAMES_UPPERCASE` (`integer`) (available from PHP 4.3.0)

`DBX_COLNAMES_LOWERCASE` (`integer`) (available from PHP 4.3.0)

`DBX_CMP_NATIVE` (`integer`)

`DBX_CMP_TEXT` (`integer`)

`DBX_CMP_NUMBER` (`integer`)

`DBX_CMP_ASC` (`integer`)

`DBX_CMP_DESC` (`integer`)