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Ok, finally figured out what I needed to do in order to install the dio.so extension and that succeeded. Updated both php.ini (web and cli) to load extension dio.so

I created a test file with the following contents:

 

$fd = dio_open('/dev/ttyUSB0', O_RDWR | O_NOCTTY | O_NONBLOCK);

dio_close($fd);

Now, when I run it, I receive the following error:

 

PHP Warning:  PHP Startup: Unable to load dynamic library 'dio.so[PHP]' (tried: /usr/lib/php/20180731/dio.so[PHP] (/usr/lib/php/20180731/dio.so[PHP]: cannot open shared object file: No such file or directory), /usr/lib/php/20180731/dio.so[PHP].so (/usr/lib/php/20180731/dio.so[PHP].so: cannot open shared object file: No such file or directory)) in Unknown on line 0

I have checked /usr/lib/php and it IS there:

 

root@mypi:/var/www/html/WebRCP# ls /usr/lib/php/20180731/
build        curl.so  fileinfo.so  iconv.so     mysqlnd.so    phar.so      simplexml.so  sysvshm.so    xmlreader.so
bz2.so       dio.so   ftp.so       json.so      opcache.so    posix.so     sockets.so    tokenizer.so  xmlwriter.so
calendar.so  dom.so   gd.so        mbstring.so  pdo.so        readline.so  sysvmsg.so    wddx.so       xsl.so

 

 

Edited by KenHorse
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