[請益] 利用PHP程式抓無線網路MIB Table並處理

[Zichi (外表是最好的掩飾)]

大家好
請教大家如何利用PHP程式來做MIB裡的Table相加減
也就是說其實Table值是一直在變化的，而我抓回來的Table要減掉上次抓回的
以下程式跑了以後沒有抓到相減的值，請問是哪邊寫錯了呢？
這是利用SNMP抓值

<?php

$labTime = date("md-Hi", time()+8*3600);

$fileName = "C:\\temp\\$labTime.txt";

$period = 10; // seconds

$host="10.10.32.144";

$comm="1234";

$oidPrefix=".1.3.6.1.4.1.522.3.12.5.1";

$colIds = array(1,3,4,5,6,7,9,10,13,14);

//$Timeout = 5;

//$Retries = 3;

if (!$handle = fopen($fileName, 'a')) {

         echo "Cannot open file ($filename)";

         exit;

}

$time1=time();

while (true) {

   foreach ($colIds as $i) {

      $cols[$i] = snmpwalk($host, $comm, "$oidPrefix.$i", 10);

      for ($j=0; $j<count($cols[$i]);$j++)

          if (strpos($cols[$i][$j],":"))
                  $cols[$i][$j]=trim(substr(strrchr($cols[$i][$j], ": "), 2 ));
   }

   $time2 = time()-$time1;

   for ($j=0; $j<count($cols[1]);$j++) {

      foreach ($colIds as $i) {

         $record[$i] = $cols[$i][$j];

      }

      $mac = $record[1];

      if (isset($val[$mac])) {

        $TxShortRetries=$record[4];

        $TxLongRetries=$record[5];

        $LatestTxShortRetries=$record[6];

        $LatestTxLongRetries=$record[7];

        $record[4]=($record[4]-$val[$mac]["TxShortRetries"][phone]) %
4294967295;

        $record[5]=($record[5]-$val[$mac]["TxLongRetries"][phone]) %
4294967295;

        $record[6]=($record[6]-$val[$mac]["LatestTxShortRetries"][phone]) %
4294967295;

        $record[7]=($record[7]-$val[$mac]["LatestTxLongRetries"][phone]) %
4294967295;

        $val[$mac]["TxShortRetries"]=$TxShortRetries;

        $val[$mac]["TxLongRetries"]=$TxLongRetries;

        $val[$mac]["LatestTxShortRetries"]=$LatestTxShortRetries;

        $val[$mac]["LatestTxLongRetries"]=$LatestTxLongRetries;

        $recStr = $time2 . "\t". implode("\t", $record);

        echo "$recStr\n";

        fputs($handle, "$recStr\n");

     }

     else {

        $val[$mac]["TxShortRetries"]=$record[4];

        $val[$mac]["TxLongRetries"]=$record[5];

        $val[$mac]["LatestTxShortRetries"]=$record[6];

        $val[$mac]["LatestTxLongRetries"]=$record[7];

     }

   }

   sleep($period);

}

fclose($handle);

?>

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