Karte optimieren (Ladenzeit)

<?php
$start = time()+(double)microtime(); 


// Koordinaten der einzelnen User
$users[1]['x'] = 1;
$users[1]['y'] = 2;


$users[2]['x'] = 5;
$users[2]['y'] = 5;


$users[3]['x'] = 8;
$users[3]['y'] = 6;


$users[4]['x'] = 9;
$users[4]['y'] = 10;


$users[5]['x'] = 44;
$users[5]['y'] = 39;


$users[6]['x'] = 25;
$users[6]['y'] = 25;




$anzeige['width'] = 9; // Breite der Anzeigefläche
$anzeige['height'] = 9; // Höhe der Anzeigefläche
$offset['width'] = round($anzeige['width'] / 2); // Berechnet den Abstand nach links
$offset['height'] = round($anzeige['height'] / 2); // Berechnet den Abstand nach oben


$map['width'] = 50; // Die Gesamtgröße (Breite) der Karte
$map['height'] = 50; // Die Gesamtgröße (Höhe) der Karte


if (isset($_GET['y']) && !empty($_GET['y'])) {
    $y_coord = $_GET['y'] - $offset['height'];
} else {
    $y_coord = 0;
}
if (isset($_GET['x']) && !empty($_GET['x'])) {
    $x_coord = $_GET['x'] - $offset['width'];
} else {
    $x_coord = 0;
}


if ($y_coord < 0) {
    $y_coord = 0;
} else if ($y_coord > ($map['height'] - $anzeige['height'])) {
    $y_coord = $map['height'] - $anzeige['height'];
}
if ($x_coord < 0) {
    $x_coord = 0;
} else if ($x_coord > ($map['width'] - $anzeige['width'])) {
    $x_coord = $map['width'] - $anzeige['width'];
}
echo "<div style='float: left; width: 270px;'>";
echo "<p><strong>Mapgröße: ".$map['width']."x".$map['height']." Felder</strong></p>";
echo "<form action='' method='get'>";
echo "X-Koordinate: <input type='text' name='x' /><br />";
echo "Y-Koordinate: <input type='text' name='y' /><br />";
echo "<input type='submit' name='submit' value='show' />";
echo "</form>";
echo "<a href='?x=".($x_coord + $offset['width'])."&amp;y=".(($y_coord + $offset['height']) - 1)."'>Nach oben</a><br />";
echo "<a href='?x=".($x_coord + $offset['width'])."&amp;y=".(($y_coord + $offset['height']) + 1)."'>Nach unten</a><br />";
echo "<a href='?x=".(($x_coord + $offset['width']) - 1)."&amp;y=".($y_coord + $offset['height'])."'>Nach links</a><br />";
echo "<a href='?x=".(($x_coord + $offset['width']) + 1)."&amp;y=".($y_coord + $offset['height'])."'>Nach rechts</a><br />";
echo "</div>";
echo "<div style='float: left; width: 800px; padding-top: 25px; padding-left: 25px;'>";
echo "<strong>Minimap:</strong>";
echo "<table cellspacing='1px' cellpadding='0px'>";
for ($y=0;$y<=$map['height'];$y++) {
    echo "<tr>";
    for ($x=0;$x<=$map['width'];$x++) {
        $taken = false;
        foreach ($users As $user) {
            if ($user['x'] == $x && $user['y'] == $y) {
                echo "<td style='width: 2px; height: 2px; background-color: #ff0000;'>";
                echo "";
                echo "</td>";
                $taken = true;
                break;
            }
        }
        if ($taken == false) {
            if (($x > $x_coord && $x <= ($x_coord + $anzeige['width'])) && ($y > $y_coord && $y <= ($y_coord + $anzeige['height']))) {
                echo "<td style='width: 2px; height: 2px; background-color: #999999;'>";
            } else {
                echo "<td style='width: 2px; height: 2px; background-color: #dedede;'>";
            }
            echo "";
            echo "</td>";
        }
    }
    echo "</tr>";
}
echo "</table>";
echo "</div>";
echo "<br style='clear: both;' />";
echo "<table>";
for ($y=$y_coord;$y<=($y_coord + $anzeige['width']);$y++) {
    echo "<tr>";
    for ($x=$x_coord;$x<=($x_coord + $anzeige['width']);$x++) {
        if ($y == $y_coord) {
            if ($x == $x_coord && $y == $y_coord) {
                echo "<th style='width: 50px; height: 50px;'></th>";
            } else {
                echo "<th style='width: 50px; height: 50px;'>".$x."</th>";
            }
        } else if ($x == $x_coord) {
            echo "<th style='height: 50px; width: 50px;'>".$y."</th>";
        } else {
            $taken = false;
            foreach ($users As $user) {
                if ($user['x'] == $x && $user['y'] == $y) {
                    echo "<td style='width: 50px; height: 50px; background-color: #ff0000;'>";
                    echo "";
                    echo "</td>";
                    $taken = true;
                    break;
                }
            }
            if ($taken == false) {
                echo "<td style='width: 50px; height: 50px; background-color: #447744;'>";
                echo "";
                echo "</td>";
            }
        }
    }
    echo "</tr>";
}
echo "</table>";


$ende = time()+(double)microtime();
$diff = round($ende-$start,6);
echo "<p>Skript wurde ausgeführt in ".$diff." Sekunden</p>";
?>

Header("Content-Type: image/png");
$width = (($map['width'] - 2) + ($map['width'] * 3));
$height = (($map['height'] - 2) + ($map['height'] * 3));
$img = ImageCreate($width, $height);
$lightgrey = ImageColorAllocate($img, 222, 222, 222);
$darkgrey = ImageColorAllocate($img, 153, 153, 153);
$red = ImageColorAllocate($img, 255, 0, 0);
$white = ImageColorAllocate($img, 255, 255, 255);
ImageFill($img, 0, 0, $white);
$size = 3;
for ($y=0;$y<$height;$y++) {
    $breite = 0;
    for ($x=0;$x<$width;$x++) {
        $taken = false;
        foreach ($users As $user) {
            if (($user['x'] - 1) == $x && ($user['y'] - 1) == $y) {
                ImageFilledRectangle($img, $x, $y, $x + $size, $y + $size, $red);
                $taken = true;
                break;
            }
        }
        if ($taken == false) {
             if (($x > ($x_coord - 1) && $x <= (($x_coord - 1)  + $anzeige['width'])) && ($y > ($y_coord - 1) && $y  <= (($y_coord - 1) + $anzeige['height']))) {
                ImageFilledRectangle($img, $x, $y, $x + $size, $y + $size, $darkgrey);
            } else {
                ImageFilledRectangle($img, $x, $y, $x + $size, $y + $size, $lightgrey);
            }
        }
    }
}
ImagePNG($img);
ImageDestroy($img);