(PECL ps >= 1.1.0)
ps_setgray — Sets gray value
$psdoc
, float $gray
)Sets the gray value for all following drawing operations.
psdocResource identifier of the postscript file as returned by ps_new().
grayThe value must be between 0 (white) and 1 (black).
Retorna TRUE em caso de sucesso ou FALSE em caso de falha.