Bidirection popen() ?

Anon

Hi, I'm writting an encode converting function with C. it would read from stdin and output the encoded result to stdout. I choose to compile it as a stand-alone application so that I can use pipe or file redirect to use it from UNIX shell. Now I want to use this function in PHP code; I tried popen() and use fputs() to feed the input data, but I can not find a way to get the output. popen() does not allow me to use "w+" to create a bi-direction connection, and I have no idea how popen() redirects the stdout. I tried to recompile the C program to save the encoded result in a seperated file, and it worked. But it not a good idea to use a tempfile every time since I need to call this function frequently in my PHP code...

kparker

How much data are you encoding? Does it contain newlines? If the answers are "not much", and "no", you might redesign your encode to take the plaintext as a command-line parameter, and write the encoded result to stdout, so you would access it this way:

$coded = exec("my_encoder $plaintext");

Anon

Actually, I want to convert the Chinese charset (Big5<->G😎 of the whole HTML output. I know that temp-file may solve all problem, but I'm seeking for a better way.

[deleted]

Why dont u try with the extra argument "type" in popen..

#include <stdio.h>

FILE popen(const char command, const char *mode);

If the mode is "r", "rt", or "rb", when the child process is started, its stdout is the writable end of the pipe, and the file descriptor of the returned stream is the readable end of the pipe.If the mode is "w", "wt", or "wb", when the child process is started, its stdin is the readable end of the pipe, and the file descriptor of the returned stream is the writable end of the pipe.

regards
smitha