PHP连接到串行通信
php如何连接到串行通信 我尝试使用一个类，但它不起作用，当我运行web时，会发生错误PHP连接到串行通信,php,class,serial-port,Php,Class,Serial Port,php如何连接到串行通信 我尝试使用一个类，但它不起作用，当我运行web时，会发生错误 Warning: Specified serial port is not valid in D:\POS\AppServ\www\Eri\ulikan\phptoserial\gagal\php_serial.class.php on line 111 Warning: The device must be set before to be open in D:\POS\AppServ\www\Eri\u
Warning: Specified serial port is not valid in D:\POS\AppServ\www\Eri\ulikan\phptoserial\gagal\php_serial.class.php on line 111
Warning: The device must be set before to be open in D:\POS\AppServ\www\Eri\ulikan\phptoserial\gagal\php_serial.class.php on line 137
Warning: Device must be opened in D:\POS\AppServ\www\Eri\ulikan\phptoserial\gagal\php_serial.class.php on line 541
Warning: Device must be opened to read it in D:\POS\AppServ\www\Eri\ulikan\phptoserial\gagal\php_serial.class.php on line 474
Warning: Unable to set the baud rate : the device is either not set or opened in D:\POS\AppServ\www\Eri\ulikan\phptoserial\gagal\php_serial.class.php on line 204
你从哪里得到那门课的？它可能需要加载某种扩展。从php_serial.class.php，您知道哪些扩展（请帮助我，也许你应该联系gmail.com上的UX。首先，请你将你编写的代码添加到问题中，然后你在Windows上运行它吗？@Mchl他似乎正在使用，令人难以置信的是，它不需要任何扩展，它使用
fopen（）/dev/tty*