C program and PHP

[Ben Chivers]

Hi,

I have written this function in a C program, using Visual Studio. The
PHP script executes fine, but the output is not displayed. I have
been racking my brains for hours trying to figure this one out. The
output from the php program should print to a file called 'out.txt'.
The file is successfully created, but with no content. I am pretty
sure it's the way PHP returns the results. Does anyone have any
ideas? Any help would be most appreciated.

int passCode(void)
{
FILE *phpFile, *out;
size_t len;
char buffer[1000];

phpFile = popen("php -f testing1.php", "r");
if (phpFile)
{
out = fopen("out.txt", "w");
len = fread(buffer, 1, sizeof(buffer), phpFile);
fprintf(out, buffer);
fclose(out);

pclose(phpFile);

return 1;
}
else
{
return 0;
}
}

[Daniel Tryba]

Ben Chivers <be***********@ntlworld.com> wrote:

The output from the php program should print to a file called 'out.txt'.
The file is successfully created, but with no content. I am pretty
sure it's the way PHP returns the results. Does anyone have any
ideas? Any help would be most appreciated.

Sounds like buffering is on in php. No output till you terminate the
popen. See flush and Output Control in the reference.

But why are you using php/C in this horrible way? It might be much
nicer/easier to give php a commandline argument which contains the file
to write to, system() the thing and when system return check if there is
any useful output in the file.

--

Daniel Tryba