# odbc_errormsg

(PHP 4 >= 4.0.5, PHP 5, PHP 7, PHP 8)

odbc_errormsg — Get the last error message

### 说明

odbc_errormsg(?Odbc\Connection `$odbc` = `null`): string

Returns a string containing the last ODBC error message, or an empty string if there has been no errors.

### 参数

`odbc`

  ODBC 连接对象，详见 odbc_connect()。

### 返回值

If `odbc` is specified, the last state of that connection is returned, else the last state of any connection is returned.

This function returns meaningful value only if last odbc query failed (i.e. odbc_exec() returned `false`).

### 更新日志

版本 | 说明
--- | ---
8.4.0 | `odbc` 现在需要 Odbc\Connection 实例；之前需要 resource。
8.0.0 | `odbc` is now nullable.

### 参见

- odbc_error() - Get the last error code
- odbc_exec() - Directly execute an SQL statement

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