图片:http: //i40.tinypic.com/2hodx55.png
我已经使用 Php 和 SNMP 构建了一个网络接口监视器,但是现在当我在 localhost 上执行它时,我看到我的图表一次又一次地转到 origin(0)(请看图片),而且 Y 轴上的速度也是错误的。有时它会以百万和百万计。
请谁能告诉我下面的代码有什么问题
<?php
$int="wlan0";
session_start();
$rx0 =snmpget('localhost','public','.1.3.6.1.2.1.2.2.1.10.3');
$tx0 =snmpget('localhost','public','.1.3.6.1.2.1.2.2.1.16.3');
sleep(5);
$rx1 =snmpget('localhost','public','.1.3.6.1.2.1.2.2.1.10.3');
$tx1 =snmpget('localhost','public','.1.3.6.1.2.1.2.2.1.16.3');
$rx0 = substr($rx0, 11);
$tx0 = substr($tx0, 11);
$rx1 = substr($rx1, 11);
$tx1 = substr($tx1, 11);
$tBps = $tx1 - $tx0;
$rBps = $rx1 - $rx0;
$round_rx=$rBps;
$round_tx=$tBps;
$time=date("U")."000";
$_SESSION['rx'][] = "[$time, $round_rx]";
$_SESSION['tx'][] = "[$time, $round_tx]";
$data['label'] = $int;
$data['data'] = $_SESSION['rx'];
if (count($_SESSION['rx'])>60)
{
$x = min(array_keys($_SESSION['rx']));
unset($_SESSION['rx'][$x]);
}
echo '{"label":"'.$int.'","data":['.implode($_SESSION['rx'], ",").']}';
?>