process works without ampersand but doesn't work with ampersand

Question

I wrote a small script to run as a daemon, everything seems to work when I run the command in unix:

php script.php

everything seems to work correctly, when I terminate that script and us the following, de script isn't running in the background:

php script.php &

What am I doing wrong? could it be a server problem or a script problem?

Answer 1

even if php doesn't look like it's going to write output, it does prepare itself to write headers at the very least. that behavior can be suppressed by using the -q option with php.

php -q script.php >/dev/null 2>&1 &

should get you where you need to be.

if you want to see whether or not php really ouputs anything, try

php -q script.php >/tmp/script.log 2>&1 &

Then see if /tmp/script.log is still 0 bytes after the script has run.

Answer 2

Try this php script.php > /dev/null 2>&1 &