(PECL ps >= 1.1.0)
ps_setlinewidth — Sets width of a line
$psdoc, float $width): boolSets the line width for all following drawing operations.
psdocResource identifier of the postscript file as returned by ps_new().
widthThe width of lines in points.
成功時(shí)返回 true， 或者在失敗時(shí)返回 false。