php - Reading & Writing Serial Port COM3 connected using USB to serial connector
I am using Direct IO for reading and writing data to serial port for sending sms using the modem (SIMADO GDT11 IN). Reference: http://php.net/manual/en/book.dio.php
Code was working fine in windows10 32 bit but now I have upgraded to 64 bit OS, Now the code is not working. Can anyone let me know what will be the issue and help me to sort it out.