/PHP/How to read data from serial port in php

How to read data from serial port in php

For Windows the Example 1 looks same this one:

<?php

exec('mode com1: baud=9600 data=8 stop=1 parity=n xon=on');
// execute 'help mode' in command line of Windows for help

$fd = dio_open('com1:', O_RDWR);

while (1) {

  $data = dio_read($fd, 256);

  if ($data) {
     echo $data;
  }
}

?>

Source: php.net

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