I am trying to modify this line.
Originally, it was
$cmd = $_REQUEST["cmd"];
Then, I changed to this by reading this post a link at Stackoverflow.
$cmd = filter_input(INPUT_REQUEST, "cmd");
But, I am still getting bottom error:
Warning: filter_input(): INPUT_REQUEST is not yet implemented
When I read other article a link, it says "INPUT_REQUEST is not a valid type."
What is solution here?
Per the documentation (and your error message, and the answer to the SitePoint Q&A you reference), it's not a valid parameter. The documentation says:
One of
INPUT_GET
,INPUT_POST
,INPUT_COOKIE
,INPUT_SERVER
, orINPUT_ENV
.
There is no such thing as INPUT_REQUEST
for this function.
What is solution here?
Use one of the parameters that actually exists.