(PECL ps >= 1.3.0)
ps_shading_pattern — Creates a pattern based on a shading
Creates a pattern based on a shading, which has to be created before with ps_shading(). Shading patterns can be used like regular patterns.
Resource identifier of the postscript file as returned by ps_new().
The identifier of a shading previously created with ps_shading().
This argument is not currently used.
The identifier of the pattern 或者在失败时返回 FALSE.