Network Status Monitor (Convert colour indications in image to percentages) for www.elisaip.net/utilization.shtml

functions.php

<?php
// Get coords
function GetCoords() {
    $coords = array();

    // Non IATA:
    //  Espoo -> ESP
    $coords["HEL2_to_TLL1"]  = array(x => 405, y => 286);
    $coords["HEL2_to_FRA1"]  = array(x => 329, y => 240);
    $coords["HEL2_to_ARN4"]  = array(x => 345, y => 162);
    $coords["HEL2_to_AS719"] = array(x => 413, y => 229);
    $coords["HEL2_to_LED"]   = array(x => 369, y => 346);
    $coords["FRA1_to_HEL2"]  = array(x => 325, y => 273);
    $coords["TLL1_to_HEL2"]  = array(x => 406, y => 338);
    $coords["ARN4_to_HEL2"]  = array(x => 343, y => 119);
    $coords["AS719_to_HEL2"] = array(x => 420, y => 266);
    $coords["LED_to_HEL2"]   = array(x => 370, y => 386);
    $coords["ESP1_to_AMS1"]  = array(x => 402, y => 138);
    $coords["ESP1_to_ARN1"]  = array(x => 464, y => 100);
    $coords["ESP1_to_AS719"] = array(x => 513, y => 176);
    $coords["ESP1_to_TLL2"]  = array(x => 535, y => 225);
    $coords["AMS1_to_ESP1"]  = array(x => 187, y => 152);
    $coords["ARN1_to_ESP1"]  = array(x => 376, y => 55);
    $coords["AS719_to_ESP1"] = array(x => 510, y => 242);
    $coords["TLL2_to_ESP1"]  = array(x => 534, y => 305);
    $coords["ARN1_to_AMS1"]  = array(x => 244, y => 50);
    $coords["ARN1_to_ARN4"]  = array(x => 285, y => 43);
    $coords["AMS1_to_ARN1"]  = array(x => 196, y => 106);
    $coords["ARN4_to_ARN1"]  = array(x => 314, y => 62);
    $coords["AMS2_to_AMS1"]  = array(x => 101, y => 221);
    $coords["AMS1_to_AMS2"]  = array(x => 102, y => 202);
    $coords["LHR_to_AMS2"]   = array(x => 77, y => 316);
    $coords["AMS2_to_LHR"]   = array(x => 77, y => 298);
    $coords["LHR_to_FRA1"]   = array(x => 144, y => 324);
    $coords["FRA1_to_LHR"]   = array(x => 167, y => 321);
    $coords["FRA2_to_FRA1"]  = array(x => 202, y => 369);
    $coords["FRA1_to_FRA2"]  = array(x => 219, y => 341);
    $coords["FRA1_to_AMS1"]  = array(x => 208, y => 240);
    $coords["AMS1_to_FRA1"]  = array(x => 193, y => 218);
    $coords["FRA2_to_TLL1"]  = array(x => 277, y => 404);
    $coords["TLL1_to_FRA2"]  = array(x => 306, y => 403);
    
    return $coords;
}

// Analyze the requested pixel
function NetworkUtilization($x, $y) {
    $imageFile = file_get_contents("http://www.elisaip.net/pics/intbone.png");
    $image = imagecreatefromstring($imageFile);
    $rgb = imagecolorat($image,$x,$y);
    $r = ($rgb >> 16) & 0xFF;
    $g = ($rgb >> 8) & 0xFF;
    $b = $rgb & 0xFF;
    $color = $r.$g.$b;

    // Is the link up?
    if($color != "0" . "0". "0") {
        // Link is up
        $linkstate = true;
    } else {
        // Link is down
        $linkstate = false;
    }

    // Get utilization
    if($color == "200" . "255". "200") {
        $util = 0;
    } elseif($color == "100" . "255". "100") {
        $util = 10;
    } elseif($color == "0" . "255". "0") {
        $util = 20;
    } elseif($color == "50" . "255" . "50") {
        $util = 30;
    } elseif($color == "50" . "180". "50") {
        $util = 40;
    } elseif($color == "100" . "150". "0") {
        $util = 50;
    } elseif($color == "255" . "255". "102") {
        $util = 60;
    } elseif($color == "255" . "204". "102") {
        $util = 70;
    } elseif($color == "255" . "153". "51") {
        $util = 80;
    } elseif($color == "255" . "101". "51") {
        $util = 90;
    } elseif($color == "255" . "0". "0") {
        $util = 100;
    } else {
        $util = undefined;
    }

    $status = array();
    $status["state"] = $linkstate;
    $status["utilization"] = $util;

    return $status;
}

// Get everything using predefined pixel locations in a array
function Data() {
    $coords = GetCoords();

    foreach($coords as $name => $coord) { 
        $data[$name] = NetworkUtilization($coord["x"], $coord["y"]);
    }

    return $data;
}

get-html.php

<?php
require_once("functions.php");

$data = Data();

foreach($data as $name => $data) {
    echo "<b>{$name}</b><br>State: {$data['state']}<br> Utilization: {$data['utilization']}%";
    echo "<br><br>";
}

get-json.php

<?php
require_once("functions.php");

$data = Data();

header('Content-Type: application/json');
echo json_encode($data);