One one of my PHP pages I use the following code:


$connections = `netstat -n`;
echo $connections;

With that, I get an output like this:


Active Connections

Proto  Local Address          Foreign Address        State
  TCP    127.0.0.1:4578         127.0.0.1:8100         TIME_WAIT
  TCP    127.0.0.1:4579         127.0.0.1:8100         TIME_WAIT
  TCP    127.0.0.1:4588         127.0.0.1:8100         TIME_WAIT
  TCP    127.0.0.1:4589         127.0.0.1:8100         TIME_WAIT
  TCP    127.0.0.1:4599         127.0.0.1:80           TIME_WAIT
  TCP    127.0.0.1:4601         127.0.0.1:5800         TIME_WAIT
  TCP    127.0.0.1:4603         127.0.0.1:9554         TIME_WAIT
  TCP    127.0.0.1:4607         127.0.0.1:8100         TIME_WAIT
  TCP    127.0.0.1:4608         127.0.0.1:8100         TIME_WAIT
  TCP    127.0.0.1:4621         127.0.0.1:8100         TIME_WAIT
  TCP    127.0.0.1:4622         127.0.0.1:8100         TIME_WAIT
  TCP    127.0.0.1:4628         127.0.0.1:80           TIME_WAIT
  TCP    127.0.0.1:4630         127.0.0.1:5800         TIME_WAIT
  TCP    127.0.0.1:4633         127.0.0.1:9554         TIME_WAIT
  TCP    127.0.0.1:4634         127.0.0.1:4664         TIME_WAIT
  TCP    127.0.0.1:4641         127.0.0.1:8100         TIME_WAIT
  TCP    127.0.0.1:4642         127.0.0.1:8100         TIME_WAIT
  TCP    127.0.0.1:4655         127.0.0.1:8100         TIME_WAIT
  TCP    127.0.0.1:4656         127.0.0.1:8100         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4571         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4572         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4575         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4576         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4582         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4583         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4586         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4587         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4592         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4593         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4605         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4606         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4617         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4618         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4623         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4624         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4637         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4638         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4643         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4644         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4647         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4648         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4657         TIME_WAIT
  TCP    127.0.0.1:8100         127.0.0.1:4658         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4570         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4573         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4574         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4577         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4581         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4584         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4585         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4590         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4591         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4594         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4597         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4609         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4616         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4619         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4620         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4625         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4636         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4639         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4640         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4645         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4646         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4649         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4654         TIME_WAIT
  TCP    127.0.0.1:8200         127.0.0.1:4659         TIME_WAIT
  TCP    192.168.1.102:80       192.168.1.101:2890     ESTABLISHED
  TCP    192.168.1.102:80       192.168.1.101:2891     ESTABLISHED
  TCP    192.168.1.102:80       192.168.1.101:2906     ESTABLISHED
  TCP    192.168.1.102:80       192.168.1.102:4610     TIME_WAIT
  TCP    192.168.1.102:80       192.168.1.102:4611     TIME_WAIT
  TCP    192.168.1.102:80       192.168.1.102:4612     TIME_WAIT
  TCP    192.168.1.102:139      192.168.1.104:1869     ESTABLISHED
  TCP    192.168.1.102:445      192.168.1.101:1025     ESTABLISHED
  TCP    192.168.1.102:2888     66.102.7.147:80        CLOSE_WAIT
  TCP    192.168.1.102:3152     66.102.7.147:443       CLOSE_WAIT
  TCP    192.168.1.102:4613     66.150.96.111:80       TIME_WAIT
  TCP    192.168.1.102:4614     4.79.120.120:80        TIME_WAIT
  TCP    192.168.1.102:4615     66.150.96.117:80       TIME_WAIT
  TCP    192.168.1.102:4626     212.58.240.44:80       TIME_WAIT
  TCP    192.168.1.102:4631     66.35.250.203:80       TIME_WAIT
  TCP    192.168.1.102:4664     192.168.1.101:2899     TIME_WAIT
  TCP    192.168.1.102:9554     192.168.1.102:4652     TIME_WAIT
  TCP    192.168.1.102:9554     192.168.1.102:4653     TIME_WAIT

As you can see, there are a bunch of loopback connections (127.0.0.1). Is there a quick way to remove all of those before echoing back $connections?