Get the length (precision) of a field

# odbc_field_len

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

odbc_field_len — Get the length (precision) of a field

### 说明

function odbc_field_len(Odbc\Result `$statement`, int `$field`): int|false

Gets the length of the field referenced by number in the given result identifier.

### 参数

`statement`

  ODBC 结果对象.

`field`

  The field number. Field numbering starts at 1.

### 返回值

Returns the field length, or `false` on error.

### 更新日志

版本 | 说明
--- | ---
8.4.0 | `statement` 现在需要 Odbc\Result 实例；之前需要 resource。

### 参见

- odbc_field_scale() - Get the scale of a field to get the scale of a floating point number

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