17599 & 17600 message

[Benkyou]

Hi All,

nohup php get_tweets.php > /dev/null & nohup php parse_tweets.php > /dev/null &

[1] 17599

[2] 17600

[supri@umesrv ~]$ nohup: ignoring input and redirecting stderr to stdout

nohup: ignoring input and redirecting stderr to stdout

What does it mean? 

I have checked the tweets, It does not work? I cannot collect the data.

thanks