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# fdf_set_ap

(3.0.6 - 3.0.18 only, PHP 4 >= 4.0.0)

fdf_set_ap -- Set the appearance of a field

## Description

``bool fdf_set_ap` (int fdf_document, string field_name, int face, string filename, int page_number)`

The fdf_set_ap() function sets the appearance of a field (i.e. the value of the /AP key). The possible values of `face` are 1=FDFNormalAP, 2=FDFRolloverAP, 3=FDFDownAP.

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