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(PHP 4 >= 4.3.0, PHP 5 < 5.3.0, PECL fdf SVN)
fdf_set_target_frame — Set target frame for form display
$fdf_document, string $frame_name): bool
Sets the target frame to display a result PDF defined with fdf_save_file() in.
fdf_document
The FDF document handle, returned by fdf_create(), fdf_open() or fdf_open_string().
frame_name
The frame name, as a string.
成功时返回 true， 或者在失败时返回 false。
