Listing all running processes on server using PHP

I don't see anything simpler than ps with the right args, eg:ahxwwo pid,command which gives just the info you want, eg:

5911 tail -F /var/log/mail.log

If you want raw data you can read each file in /proc/[123456789]*/cmdline. For example,

$ cat -vet /proc/5911/cmdline
tail^@-F^@/var/log/mail.log^@

where the command arguments are separated by a null character.

Most of the credit goes to meuh.

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ps ahxwwo pid,command

Gives me the three items I need, but it is still rather difficult to parse due to arbitrary space formatting.

However, it is possible to remove the space formatting.

ps ahxwwo pid:1,command:1

Using explode with a white space as the delimiter now guarantees that index 0 is the pid, and index 1 is the command, and the remaining indices are arguments.