Sunday, March 5. 2006
Get your geo plugin here
PHP 5, JSON from pecl cvs, Map Tile API
and the Yui Connection Manager.
Toss them in a bag and shake and you get something like this. Enter a city name, or even a
pseudo-name like Philly or SFO and hit return. Each time you enter a new name you will get a map tile for that city.
It's not all that fancy, but it sure is easy to do:
33 lines total which includes about 6 lines of PHP which consists mostly of building the URL to the map tile service. Then the Javascript which has a callback function to read the form values and make the backend GET request and a simple function to take the JSON response and add the map tile to the document. And finally the actual HTML form.
With a slight tweak you can change it to make a nice geocode lookup field.
So, fire up your text editors and start writing some plugins for blog and forum packages and perhaps image gallery applications as well.
It's not all that fancy, but it sure is easy to do:
33 lines total which includes about 6 lines of PHP which consists mostly of building the URL to the map tile service. Then the Javascript which has a callback function to read the form values and make the backend GET request and a simple function to take the JSON response and add the map tile to the document. And finally the actual HTML form.
With a slight tweak you can change it to make a nice geocode lookup field.
So, fire up your text editors and start writing some plugins for blog and forum packages and perhaps image gallery applications as well.
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Cool! But why the PHP deserialization and JSON reserialization?
Am I missing something or can you switch to format=json and switch to a straight echo file_get_contents($src); instead?
Am I missing something or can you switch to format=json and switch to a straight echo file_get_contents($src); instead?
I didn't check the docs, but this seems to work for me:
http://api.local.yahoo.com/MapsService/V1/mapImage?appid=rlerdorf&location=SFO&output=json&image_width=300&image_height=300&zoom=7
http://api.local.yahoo.com/MapsService/V1/mapImage?appid=rlerdorf&location=SFO&output=json&image_width=300&image_height=300&zoom=7
True, but if you check:
http://developer.yahoo.net/maps/rest/V1/mapImage.html
and
http://developer.yahoo.net/maps/rest/V1/geocode.html
You will see that this is not documented, so relying on it at this point would be a bad idea. But yes, you are right, you could pass the json straight through, of course.
http://developer.yahoo.net/maps/rest/V1/mapImage.html
and
http://developer.yahoo.net/maps/rest/V1/geocode.html
You will see that this is not documented, so relying on it at this point would be a bad idea. But yes, you are right, you could pass the json straight through, of course.
Hum... I'll let McManus know his docs are out of date. :)
When I try it with "Vienna" I get a flood of JavaScript errors. The output of the post to /php/ymap/yajax.php is:
Warning: file_get_contents(http://api.local.yahoo.com/MapsService/V1/mapImage?appid=rlerdorf&location=vienna&output=php&image_width=300&image_height=300&zoom=7) [function.file-get-contents]: failed to open stream: HTTP request failed! HTTP/1.1 400 Bad Request
in /var/www/lerdorf.com/php/ymap/yajax.php on line 7
false
and then it tries to post again and again and ...
Warning: file_get_contents(http://api.local.yahoo.com/MapsService/V1/mapImage?appid=rlerdorf&location=vienna&output=php&image_width=300&image_height=300&zoom=7) [function.file-get-contents]: failed to open stream: HTTP request failed! HTTP/1.1 400 Bad Request
in /var/www/lerdorf.com/php/ymap/yajax.php on line 7
false
and then it tries to post again and again and ...
Why a toys page?
I love geeky toys and people are always asking me about them. So this page is where I keep track of the gadgets that interest me.
