start-stop-daemon error write to disk (some text)

Question

Have C++ server program that writes logs to disk.
Starting it from php script

shell_exec("start-stop-daemon -Sbvx /home/my_server.out");

inside this program:

ofstream log_file("/home/log.txt");
log_file << "some_log\n";

But there is no any log when start it as daemon :(
(when usual start ./my_server.out all works fine)

Answer 1

fogot close file. log_file.close(); Thats why it does not works in daemon mode. (No auto close file when daemon killed)