Ayuda Php, ping y Ubuntu server...

[ziex]

The ping utility returns an exit status of zero if at least one response
was heard from the specified host; a status of two if the transmission
was successful but no responses were received; or another value (from
<sysexits.h>) if an error occurred.

estoo y lo que hay en ubuntu del "man ping"
a sido lo que e encontrao sobre los valores que devuelve, pero no como
cojerlos :SSSSS