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# ovrimos_longreadlen

(PHP 4 >= 4.0.3, PHP 5)

ovrimos_longreadlen -- Specifies how many bytes are to be retrieved from long datatypes

## 说明

bool ovrimos_longreadlen ( int result_id, int length )

Specifies how many bytes are to be retrieved from long datatypes (long varchar and long varbinary).

## 参数

`result_id`

  A result identifier, returned by ovrimos_execute() or ovrimos_exec().

`length`

  The number of bytes to retrieve. Default is zero.

## 返回值

Returns `TRUE`.

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