Array and string offset access syntax with curly braces is no longer supported in /var/www/html/AIO/PhpSerial.php on line 318

[nc8q]

Reference:
"The reason is that with PHP 7.4 the array and string offset access syntax using curly braces is deprecated and it was removed entirely in PHP 8.0"

Quote:

I replaced $parity{0} with $parity[0] and
both return{0} with return[0] and
now there are no errors.

Regards, Chuck

[bohnelang]

I guess, the better way is to use substr($parity,0,1) and substr($return,0,1) ist this point.