Tag: stderr

php run command line and pipe std err to variable

I am trying to figure out how to run a command line program within php and output both stout and stderr to a variable. All the examples either output the command line directly to the screen, or only output stdout for example will output the following directly to the screen and not store anything in $data And the following will

How to debug “FastCGI sent in stderr: Primary script unknown while reading response header from upstream” and find the actual error message?

debugging fastcgi nginx php stderr

SO has many articles mentioning this error code: That probably means that this error message is more or less useless. The message is telling us that the FastCGI handler doesn’t like whatever it was sent for some reason. The problem is that sometimes we have no idea what the reason is. So I’m re-stating the question — How do we