基于IDP发现的OpenID的PHP实现?

好吧,我发现修改xrds简单实现来支持Google的主机元发现机制相对简单。需要注意的是,这是Google名称空间内的一种实验性发现机制,稍后应该改为更适合于全球独立系统的机制。

xrds简单补丁:

• http://pastebin.com/f428fac98

查找要馈送到php openid的标识URL的示例用法:

<?php

require_once 'XRDS.php';
require_once 'XRDS/Discovery.php';

$domain = 'google.com';

$disco = new XRDS_Discovery();
$disco->discovery_methods = array('XRDS_Discovery_Host_Meta');
$xrds = $disco->discover('https://www.google.com/accounts/o8/.well-known/host-meta?hd=' . $domain);

$xrd = $xrds->xrd[0];
$identityUri = $xrd->service[1]->uri[0]->uri;

if (0 == strcmp($xrd->canonicalId, $domain)) {
    echo "identity uri: $identityUri\n\n";
} else {
    echo "discovery failed.\n\n";
}

?>