预定义常量

以下常量由本扩展模块定义，因此只有在本扩展模块被编译到 PHP 中，或者在运行时被动态加载后才有效。

PRINTER_COPIES (integer)

PRINTER_MODE (integer)

PRINTER_TITLE (integer)

PRINTER_DEVICENAME (integer)

PRINTER_DRIVERVERSION (integer)

PRINTER_OUTPUT_FILE (integer)

PRINTER_RESOLUTION_Y (integer)

PRINTER_RESOLUTION_X (integer)

PRINTER_SCALE (integer)

PRINTER_BACKGROUND_COLOR (integer)

PRINTER_PAPER_LENGTH (integer)

PRINTER_PAPER_WIDTH (integer)

PRINTER_PAPER_FORMAT (integer)

PRINTER_FORMAT_CUSTOM (integer)

PRINTER_FORMAT_LETTER (integer)

PRINTER_FORMAT_LEGAL (integer)

PRINTER_FORMAT_A3 (integer)

PRINTER_FORMAT_A4 (integer)

PRINTER_FORMAT_A5 (integer)

PRINTER_FORMAT_B4 (integer)

PRINTER_FORMAT_B5 (integer)

PRINTER_FORMAT_FOLIO (integer)

PRINTER_ORIENTATION (integer)

PRINTER_ORIENTATION_PORTRAIT (integer)

PRINTER_ORIENTATION_LANDSCAPE (integer)

PRINTER_TEXT_COLOR (integer)

PRINTER_TEXT_ALIGN (integer)

PRINTER_TA_BASELINE (integer)

PRINTER_TA_BOTTOM (integer)

PRINTER_TA_TOP (integer)

PRINTER_TA_CENTER (integer)

PRINTER_TA_LEFT (integer)

PRINTER_TA_RIGHT (integer)

PRINTER_PEN_SOLID (integer)

PRINTER_PEN_DASH (integer)

PRINTER_PEN_DOT (integer)

PRINTER_PEN_DASHDOT (integer)

PRINTER_PEN_DASHDOTDOT (integer)

PRINTER_PEN_INVISIBLE (integer)

PRINTER_BRUSH_SOLID (integer)

PRINTER_BRUSH_CUSTOM (integer)

PRINTER_BRUSH_DIAGONAL (integer)

PRINTER_BRUSH_CROSS (integer)

PRINTER_BRUSH_DIAGCROSS (integer)

PRINTER_BRUSH_FDIAGONAL (integer)

PRINTER_BRUSH_HORIZONTAL (integer)

PRINTER_BRUSH_VERTICAL (integer)

PRINTER_FW_THIN (integer)

PRINTER_FW_ULTRALIGHT (integer)

PRINTER_FW_LIGHT (integer)

PRINTER_FW_NORMAL (integer)

PRINTER_FW_MEDIUM (integer)

PRINTER_FW_BOLD (integer)

PRINTER_FW_ULTRABOLD (integer)

PRINTER_FW_HEAVY (integer)

PRINTER_ENUM_LOCAL (integer)

PRINTER_ENUM_NAME (integer)

PRINTER_ENUM_SHARED (integer)

PRINTER_ENUM_DEFAULT (integer)

PRINTER_ENUM_CONNECTIONS (integer)

PRINTER_ENUM_NETWORK (integer)

PRINTER_ENUM_REMOTE (integer)