(PECL ps >= 1.1.0)
ps_setdash — Sets appearance of a dashed line
Sets the length of the black and white portions of a dashed line.
Resource identifier of the postscript file as returned by ps_new().
The length of the dash.
The length of the gap between dashes.
성공할 경우 TRUE를, 실패할 경우 FALSE를 반환합니다.