Giving PHP permission to access COM port

Question

I\'m creating a php script that connects to a 3G modem connected via serial connection on COM5.

I\'m getting the following error and I believe it is because php does

Answer 1

There are many ways to access COM ports on windows, alternatives to your method are opening it with the following paths:

\Device\00000123 (You can find the correct value in device manager, properties, details, physical device object name)

\\.\com5 (This is how I would open the port as a file if I was writing a program in C or something)