Hi all We need to compile a C program from PHP environment and to execute the object file of the program. We used PHP system commands writing system('cc programname.c -o objectfile') and system('./objectfile').It works for small program(we checked) but in our application it was able to compile but failed to run the objectfile.The object file when executed should give a large(23 MB) binary file.The program is working properly from the terminal provided we write the command ' limit stacksize unlimited' before running the program.The same command 'limit stacksize unlimited' we tested in PHP but we did not get the result. Is it feasible in PHP or we r wrong somewhere? Can u all please help?? Basab Goswami