我如何用php打印图像 - How can I print an image with php

你好，我把这段代码放在那里:

$handle = printer_open ("HP Photosmart 5520 series"); 
printer_write ($handle, "jo.png"); 
printer_close ($handle);

但不是打印图像，而是打印文本jo.png.

尝试使用这个printer-draw-bmp，您在本手册的注释中有一个很好的例子。

$im = imagecreatefrompng('kitten.png');
$randomName = uniqid() . '.bmp';
imagewbmp($im, $randomName);
$handle = printer_open("HP Photosmart 5520 series");
printer_start_doc($handle, "My Document");
printer_start_page($handle);
printer_draw_bmp($handle, $randomName, 0, 0);
printer_end_page($handle);
printer_end_doc($handle);
printer_close ($handle);
unlink($randomName);