$this=system(ping wall);
echo $this;
PING wall (wood.metal.glass): 128 data bytes
64 bytes from wall: icmp_seq=0 ttl=64 time=1057000.00 ms
--- wall ping statistics ---
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max/stddev = 1057000.00/1057000.00/1057000.00/0.000 ms