Unable to retrieve URL with file_get_contents

Question

Our monitoring software supports a stateless API that with the correct parameters returns either XML or JSON output to the browser. When trying to pull this information, I have found that file_get_contents, file, and any other approaches always fail with "failed to open stream: No such file or directory".

I have made sure that "allow_url_fopen" is enabled, tried the URL with and without encoding, using file_get_contents with and without stream context, and just to simplify it, tried pulling the URL contents for just the base URL without any parameters.

I am at a complete loss as to why nothing works to pull the contents from this URL. The URL works fine in the browser but seems inaccessible from PHP, even on different web-servers.

My full code... <?php

$protocol = "http";
$prtg_url = "prtg.domain.net:8080/";
$prtg_user = "username";
$prtg_hash = "passhash";

function getSensorData($deviceid)
{
    $opts = array('http' =>
    array(
        'method'  => 'GET',
        'header'  => "Content-Type: text/xml\r\n",          
        'timeout' => 60
    )
);

$context  = stream_context_create($opts);

    $sensor_xml_url = $GLOBALS['protocol'] . "://". $GLOBALS['prtg_url'] .
                        "api/table.json?content=sensors&output=json&columns=objid,type,device,sensor,status&id=" .
                        $deviceid . "&username=" . $GLOBALS['prtg_user'] . "&passhash=" . $GLOBALS['prtg_hash'];

    $xml_url_encoded = rawurlencode($sensor_xml_url);

    if ($response_xml_data = file_get_contents($xml_url_encoded) == false)
    {
        echo "Error fetching XML\n";
    }
    else
    {
        $sensors = simplexml_load_string($response_xml_data);

        foreach ($sensors->item as $sensor)
        {
            $sensor_ping = $sensor->ping;
            $sensor_id = $sensor->objid;
            $sensor_type = $sensor->type;
            $sensor_typeraw = $sensor->type_raw;

            echo $sensor_ping . "</br>";
            echo $sensor_id . "</br>";
            echo $sensor_type . "</br>";
            echo $sensor_typeraw . "</br>";
        }
    }
}

getSensorData("3401");

?>

This also fails...

$results = file_get_contents(rawurlencode("http://prtg.domain.net:8080"));
echo $results;

Answer 1

Why are you rawurlencoding that url? In doing so you're trying to get the contents from "http%3A%2F%2Fprtg.fragnet.net%3A8080"

Why not just: rawurlencode the actual parameters and leave the domain/subdomain/protocol/port alone etc.

$results = file_get_contents("http://prtg.fragnet.net:8080"); ?