이 확장은 다음의 상수들을 정의합니다. 이 확장을 PHP에 내장했거나, 실행시에 동적으로 읽어들일 경우에만 사용할 수 있습니다.
Since PHP 4.3.0 it is possible to specify additional client flags for the mysql_connect() and mysql_pconnect() functions. The following constants are defined:
| Constant | Description |
|---|---|
| MYSQL_CLIENT_COMPRESS | Use compression protocol |
| MYSQL_CLIENT_IGNORE_SPACE | Allow space after function names |
| MYSQL_CLIENT_INTERACTIVE | Allow interactive_timeout seconds (instead of wait_timeout) of inactivity before closing the connection. |
| MYSQL_CLIENT_SSL | Use SSL encryption. This flag is only available with version 4.x of the MySQL client library or newer. Version 3.23.x is bundled both with PHP 4 and Windows binaries of PHP 5. |
The function mysql_fetch_array() uses a constant for the different types of result arrays. The following constants are defined:
| Constant | Description |
|---|---|
| MYSQL_ASSOC | Columns are returned into the array having the fieldname as the array index. |
| MYSQL_BOTH | Columns are returned into the array having both a numerical index and the fieldname as the array index. |
| MYSQL_NUM | Columns are returned into the array having a numerical index to the fields. This index starts with 0, the first field in the result. |