STDERR and STDOUT and system()

[Xu Wei Jie]

I am currently having problem with this line of code. When I write debug messages to STDERR (fwrite(STDERR,'error') and processed contents of scripts to STDOUT directed to files, if 2 system commands are running together and writing to 2 different files, I will get 1 'error' printed to STDOUT(the console) and 1 'error' printed to the 1st file which is unwanted. Anyone knows how to work around this? I need to print debug messages to console only.

 

system("php $frame 2>&1 1>> $file",$retval);