A PHP module that incorporates all known APIs that map an email address to user information
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FindByEmail.php ~~~~~~~~~~~~~~~ *Before using this module, you must add your own keys to config.php!* You can give this a try for yourself at http://web.mailana.com/labs/findbyemail/ This module looks up user information from various public sources based on the supplied email address. It queries the following services: WebFinger Gravatar Yahoo 43things Vimeo Amazon Brightkite AIM Friendfeed Google Social Graph Rapleaf DandyID IntenseDebate Jigsaw MySpace The main entry point is the find_by_email() function. This calls the various services that offer a mapping between an email address and user information, and returns an array containing all the information found. The result is an associative array, with a string representing the service's name pointing to an array of user information for each service. The user information is itself an associative array, consisting of the following information, with each item possibly an empty string if the service doesn't supply it: user_id: A numerical value identifying the user on the service user_name: A human-readable identifier for the user, eg "petewarden" display_name: The full name of the user, eg "Pete Warden" portrait_url: A URL pointing to a photo of the user on the service location: An unnormalized location string from the service, eg "Boulder, CO" Some services like Rapleaf, Friendfeed and DandyID return information on multiple other services for a user. These appear in the results, but are overwritten if the services themselves return information first. I've also included an example of a simple API provider, with a version hosted at http://web.mailana.com/labs/findbyemail/api.php To use it, just pass in the email address as a parameter, and you'll get JSON back: http://web.mailana.com/labs/findbyemail/api.php?email=pete%40petewarden.com To parse hCard pages for WebFinger, it uses the hKit project: http://code.google.com/p/hkit/ That is licensed under the LGPL. You may also need the DOM/XML module for PHP: http://www.php.net/manual/en/dom.setup.php Otherwise the code is icensed under the 2-clause (eg no advertising requirement) BSD license, making it easy to reuse for commercial or GPL projects: (c) Pete Warden <firstname.lastname@example.org> http://petewarden.typepad.com/ Jan 8th 2010 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.