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# MP3_Id::study()

MP3_Id::study() -- does extra work to get the MPEG frame info

## Synopsis

    require_once 'Id.php';

``void MP3_Id::study` (void)`

## Description

Does extra work to get the MPEG frame info.

## Throws

Table 37-1. Possible PEAR_Error values

Error code | Error message | Reason | Solution
--- | --- | --- | ---
`PEAR_MP3_ID_NOMP3` | "No mpeg frame found" | The file have no MP3 file structure. | The file is not a MP3 file.

## Note

This function can not be called statically.

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MP3_Id::setTag() | Up | MP3_Id::write()