Close all ODBC connections

# odbc_close_all

(PHP 4, PHP 5, PHP 7, PHP 8)

odbc_close_all — Close all ODBC connections

### 说明

function odbc_close_all(): void

odbc_close_all() will close down all connections to database server(s).

### 参数

此函数没有参数。

### 返回值

没有返回值。

### 注释

> 注意:

> This function will fail if there are open transactions on a connection. This connection will remain open in this case.

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