At a quick glance, have you noticed the $filename is expecting to
output a link in the following format:
$filename = /var/www/merge/tiles/zoom_x_y.png
But your files appear to me to be organised into something like /var/
www/merge/tiles/zoom/x/y.png ?
Take a closer look at the $filename, I suspect you need to change it a
bit (look at the . "_" . parts especially). Let me know how it goes.
On Jul 30, 8:50 pm, Jason <jason.wool...@gmail.com> wrote:
> Thanks for posting that Kesuke! It would be great to get this working.
> Those 404s have been a headache for quite a while.
>
> I've implemented your example on a small test page and I'm not seeing
> any tiles. I'm not too familiar with PHP but I did check that safe
> mode is "off" with phpinfo.
>
> My php looks like this:
>
> <?php
> $filename = "/var/www/merge/tiles/" . intval($_GET['z']) .
> "_" .intval($_GET['x']) . "_" . intval($_GET['y']) . ".png";
>
> header("Content-Type: image/png");
> header("Cache-Control: max-age=84600");
>
> if (file_exists($filename)) {
> header("Content-Length: " . filesize($filename));
> readfile($filename);
> } else {
> readfile("/var/www/merge/tiles/clear.png");
> }
> ?>
>
> the tiles are at:
>
> http://69.164.209.124/merge/tiles/
>
> and the page is here:
>
> http://69.164.209.124/merge/mimagery.html
>
> Any idea what I'm missing here?
>
> Thanks in advance for a steer in the right direction.
>
> On Jul 30, 10:19 am, Kesuke <nick_dai...@hotmail.com> wrote:
>
>
>
> > Okay, thanks everyone – the PHP solution works great!
> > So here is a guide for Jason or anyone else who stumbles across this;
>
> > 1.) Make a new PHP file with the following code:
>
> > <?php
>
> > $filename = "/usr/www/httpdocs/tiles/" . intval($_GET['z']) . "_" .
> > intval($_GET['x']) . "_" . intval($_GET['y']) . ".png";
>
> > header("Content-Type: image/png");
> > header("Cache-Control: max-age=84600");
>
> > if (file_exists($filename)) {
> > header("Content-Length: " . filesize($filename));
> > readfile($filename);
> > } else {
> > readfile("/usr/www/httpdocs/clear.png");
> > }
>
> > ?>
>
> > Basically this PHP script will check to see if the file exists. If it
> > does it will return the file. If it doesn't, it will return a 1px
> > empty image, in this case called 'clear.png'. The only stuff you
> > should need to change are the paths to clear.png and $filename. Be
> > aware that PHP safe mode can probably screw this up.
>
> > NOTE: counter-intuitively, PHP looks for the true file destination NOT
> > the URL. So you need to know your servers C:// style path to the file.
> > There are ways around it using fopen() but you would need to look
> > those up - not realising this gave me headaches.
>
> > 2.) Now, go into your map javascript and point to the PHP file instead
> > of the image URL. Specify the zoom/x/y co-ords which we will detect
> > using $_GET in our PHP script. If you don’t know what $_GET is have a
> > look on google as its quite fundamental – but in basic terms you send
> > variables and their values to a PHP document by appending the URL with
> > the format “map.html/?var=value&othervar=value”. PHP then plucks those
> > values and variables out for you to use.
>
> > So, using the above example:
>
> > function createImageMapType(id) {
> > return new google.maps.ImageMapType({
> > getTileUrl: function(coord, zoom) {
> > return "/tilefinder.php?z=" + zoom + "&x=" + coord.x + "&y=" +
> > coord.y;
> > },
> > tileSize: new google.maps.Size(256, 256),
> > isPng: true,
> > opacity: true
> > });
> > }
>
> > I hope this helps. So far it seems to be working well on my site,
> > there is a noticable improvement in load times and my Google PageSpeed
> > score got pushed up by about 20-30 points. If you want to improve
> > things further, I suggest setting a higher max-age (probably of 28
> > days/2419200) and also adding a last modified content-type header.
>
> > On Jul 30, 12:52 am, John Coryat <cor...@gmail.com> wrote:
>
> > > On Friday, July 29, 2011 6:20:03 PM UTC-5, Jason wrote:
>
> > > > Sorry for the noob question but does this require any other
> > > > configuration changes (ie. htaccess)? I've included this in my
> > > > index.html and it is still showing 404 errors in Chrome.
>
> > > > Thanks
>
> > > You'll have to be more specific. What did you try? What's the URL of your
> > > map?
>
> > > -John Coryat- Hide quoted text -
>
> - Show quoted text -
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