<?php

 function getstr1($strall,$str1,$str2,$html_charset='utf-8'){

     $i1=mb_strpos($strall,$str1,0,$html_charset);

     if(!is_int($i1)){return '';}

     $i1R=$i1+mb_strlen($str1,$html_charset);

     $i2=mb_strpos($strall,$str2,$i1+mb_strlen($str1,$html_charset),$html_charset);

     if(!is_int($i2)){return '';}

     return(mb_substr($strall,$i1R,$i2-$i1R,$html_charset));

 }

 class traffic{

     private $lastArr=array();

     function __construct(){

         $this->lastArr['time']=0;

         $this->lastArr['out']=0;

         $this->lastArr['in']=0;

     }

     function doinfo($time,$in,$out){

         $timeI=$time-$this->lastArr['time'];

         $outI=$out-$this->lastArr['out'];

         if($outI<0)$outI+=pow(2,32);

         $inI=$in-$this->lastArr['in'];

         if($inI<0)$inI+=pow(2,32);

         $strOut=number_format($outI/$timeI/1024/1024,2);

         $strIn=number_format($inI/$timeI/1024/1024,2);

         echo 'Out: '.$strOut.'MB/s,  In: '.$strIn."MB/s\n";

         $this->lastArr['time']=$time;

         $this->lastArr['out']=$out;

         $this->lastArr['in']=$in;

     }

 }

 $session = new SNMP(SNMP::VERSION_2C, "10.105.1.1", "public");

 $arr=array();

 $arr[]='iso.3.6.1.2.1.1.3.0';

 $n=6;

 $arr[]='iso.3.6.1.2.1.2.2.1.10.'.$n;//in

 $arr[]='iso.3.6.1.2.1.2.2.1.16.'.$n;//out

 $traffic=new traffic();

 while(1){

     $p=$session->get($arr);

     $timeticks=$p['iso.3.6.1.2.1.1.3.0'];

     $timeticks=getstr1($timeticks,'(',')');

     $timeticks=$timeticks/100;

     $iIn=$p['iso.3.6.1.2.1.2.2.1.10.6'];

     $iIn=explode(': ',$iIn)[1];

     $iIn=floatval($iIn);

     $iOut=$p['iso.3.6.1.2.1.2.2.1.16.6'];

     $iOut=explode(': ',$iOut)[1];

     $iOut=floatval($iOut);

     $traffic->doinfo($timeticks,$iIn,$iOut);

     sleep(2);

 }

 $session->close();