Passing data between PHP and C executable in linux

Question

Under Linux ,if I want to pass pure string from PHP to C, how do i do that? what I\'ve tried do far is:

exec(\"./myexec.bin -a mystring\");

Answer 1

try using echo and pipe the output to your C executable instead of using args:

exec("/bin/echo | ./myexec.bin");

as @sarnold mentioned in comments it's wrong. Look at @Linus Kleen answer.

in your C program:

fopen(stdin, "r");
// ...