This function is
EXPERIMENTAL. The behaviour of this function, its name, and
surrounding documentation may change without notice in a future release of PHP.
This function should be used at your own risk.
The following flags are valid:
SWFBUTTON_UP,
SWFBUTTON_OVER,
SWFBUTTON_DOWN and
SWFBUTTON_HIT.
SWFBUTTON_HIT isn't ever displayed, it defines
the hit region for the button. That is, everywhere the hit shape would
be drawn is considered a "touchable" part of the button.
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