[PHP FRAMEWORK ?!]

cakephp

[session error]

[code=php:0]session_start();[/code] must be called before there is _any_ output sent to the user agent. Check for other error messages/notices and for any unwanted whitespace outside of [code=php:0]<?php ?>[/code] tags.

[changing key and value inside array]

try this..

[code]<?php

function formatArray ($array)
{
    if (!is_array($array)) return false;

    $return = array();

    foreach ($array as $key => $val)
    {
        $key = trim(substr($key, 12));
        $val = trim(substr($val, 12));

        $key = str_replace(' ', ':', $key);

        $return[$key] = $val;
    }

    return $return;
}

$sys = snmprealwalk("192.168.100.100", "cisco1720", ".1.3.6.1.2.1.17");
$sys = formatArray($sys);

?>[/code]untested.