(PECL ps:1.1.0-1.3.5)
ps_set_parameter — Sets certain parameters
Sets several parameters which are used by many functions. Parameters are by definition string values.
Resource identifier of the postscript file as returned by ps_new().
For a list of possible names see ps_get_parameter().
The value of the parameter.
如果成功则返回 TRUE,失败则返回 FALSE。