# fbsql_db_query

(PHP 4 >= 4.0.6, PHP 5, PHP 7)

fbsql_db_query — Send a FrontBase query

### 说明

fbsql_db_query ( string `$database` , string `$query` [, resource `$link_identifier` ] ) : resource

Selects a database and executes a query on it.

### 参数

`database`

  The database to be selected.

`query`

  The SQL query to be executed.

  > Note:

  > The query string shall always end with a semicolon.

`link_identifier`

  由 fbsql_connect() 或 fbsql_pconnect() 返回的 FrontBase 链接标识符.

  如可选并未指定，函数会尝试查找一个到 FrontBase 服务器的开放链接，且如没有找到这样的链接，会尝试通过不带参数调用 fbsql_connect() 来创建一个。

### 返回值

Returns a positive FrontBase result identifier to the query result, or `FALSE` on error.

### 参见

- fbsql_query() - Send a FrontBase query
- fbsql_connect() - Open a connection to a FrontBase Server