snmp switch traffic交换机带宽

上代码

<?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();