cpdf_setgray_fill
(PHP 3 >= 3.0.8, PHP 4, PECL)
cpdf_setgray_fill -- Sets filling color to gray value
Description
bool
cpdf_setgray_fill ( int pdf_document, float value )
The cpdf_setgray_fill() function sets the current
gray value to fill a path. 如果成功则返回 TRUE，失败则返回 FALSE。
See also cpdf_setrgbcolor_fill().