OMGM Code

<?php

$zoom = $_GET["zoom"];
$tileX = $_GET["x"];
$tileY = $_GET["y"];

header ('Content-type: image/png');

$tileImage = "tilesdir/".$zoom."/x".$tileX."_y".$tileY.".png";

$showTileInfo = false;

if($showTileInfo){
    include "gm.php";
}

if( file_exists($tileImage) ) {
    $im = imagecreatefrompng($tileImage);

    if($showTileInfo) writeTileInfo($im, $zoom, $tileX, $tileY);

    imagepng($im);
    imagedestroy($im);
}
else {
    $im = @imagecreatetruecolor(256, 256);

    if($im) {
        imagesavealpha($im, true);
        $trans_colour = imagecolorallocatealpha($im, 0, 0, 0, 127);
        imagefill($im, 0, 0, $trans_colour);

        if($showTileInfo) writeTileInfo($im, $zoom, $tileX, $tileY);

        imagepng($im);
        imagedestroy($im);
    }
}

function writeTileInfo($im, $zoom, $tileX, $tileY) {
    $value = Google_Tile_Factors( $zoom );
    $tile = Google_Tile_Calc( $value, $tileY, $tileX ) ;

    $text_color = imagecolorallocate($im, 233, 14, 91);

    $strArr = array(
        "X=".$tileX . ", Y=".$tileY.", ZOOM=".$zoom,
        "latN: ".$tile["LATN"],
        "lngW: ".$tile["LNGW"],
        "latS: ".$tile["LATS"],
        "lngE: ".$tile["LNGE"],
        "pixN: ".$tile["PYN"],
        "pixW: ".$tile["PXW"],
        "pixS: ".$tile["PYS"],
        "pixE: ".$tile["PXE"]
    );

    $y = 5;

    foreach($strArr as $str) {
        imagestring($im, 2, 5, $y, $str , $text_color);
        $y = $y+15;
    }
    imagerectangle($im, 0, 0, 255, 255, $text_color);
}
?>