C++ display output into php

Question

I have a C++ console application that returns some kind of things, then, I need to show that in a browser. So I tried to write every console.write from C++ to a .txt file for future PHP reading, but no success because it doesn't write the errors!

Then I tried to use exec('program.exe', $output); at PHP but no success too.. :/

Is there another way to do that?
Or any function in C++ that writes to a .txt every single thing that shows up in the console?
Or some function in another Programming Language that catches everything in the console?

What was the problem with writting into file and reading from PHP? — Royal Bg, Dec 10 '13 at 12:53
btw. what about c++ cgi? You can directly use your program as a web app, if written in that manner — Royal Bg, Dec 10 '13 at 13:00
You know, he write the Console.WriteLine, but the errors don't. @RoyalBg, is a huge program, I couldn't write that again. — Juliano Lima, Dec 10 '13 at 13:00
`exec('program.exe', $output)` is not sufficient. What is the rest of your solution? — Lightness Races in Orbit, Dec 10 '13 at 13:06
What about some kind of stderr redirection? http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/redirection.mspx?mfr=true — dousin, Dec 10 '13 at 13:08

score 0 · Answer 1 · edited May 23 '17 at 12:03

0

You have to understand that cout (standard output) and cerr (standard error output) are two different streams, so probably you forgot to redirect cerr to your text file as well. Here some ideas you can use:

Redirect your streams to a file on your code (see How to redirect cin and cout to files?)
Redirect the output of any console program from the command line (you don't require to change the code and works on windows and unix / linux) by calling it this way executable.exe > out.txt 2>&1 (see Redirect all output to file)
Connect your web application to your console application using TCP sockets (might be an overhead but useful if the application requires some kind of interactive control)

edited May 23 '17 at 12:03

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answered Dec 10 '13 at 13:16

ButterDog

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Trying to use the second method output that to the .txt: Exce‡Æo Sem Tratamento: System.IO.IOException: Identificador inv lido. in System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) in System.IO.__Error.WinIOError() in System.Console.set_CursorVisible(Boolean value) in Butterfly.Program.InitEnvironment() at c:\Users\Administrador\Desktop\Revision 5 - Alpha 3\Butterfly\Program.cs:linha 58 in Butterfly.Program.Main() at c:\Users\Administrador\Desktop\Revision 5 - Alpha 3\Butterfly\Program.cs:line 37 – Juliano Lima Dec 10 '13 at 13:24
It'd be easier if you edited your question and added the relevant pieces of code (the code where you call your external application and the lines where the error appears) – ButterDog Dec 10 '13 at 16:30

score -1 · Answer 2 · edited May 23 '17 at 12:29

-1

There are three standard file handles known as stdin, stdout, stderr. Looks like you're only fetching stdout right now. Try to redirect stderr to stdout.

exec('program.exe 2>&1', $output);

(works not only on *nix but also win32).

see also: In the shell, what does " 2>&1 " mean?

edited May 23 '17 at 12:29

Community

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answered Dec 10 '13 at 13:08

VolkerK

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Array ( [0] => 'test.exe' is not recognized as an internal or external command, operable program or batch file. ) – Juliano Lima Dec 10 '13 at 13:19
Then test.exe is not within the search path. Try an absolute path like `c:\test\test.exe` – VolkerK Dec 10 '13 at 16:02

C++ display output into php

2 Answers2