Databases
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    <p>Cookies can be applied on <strong>domains</strong> and <strong>subdomains</strong>.</p> <p>If you do not set the domain cookie attribute, by default, the cookie domain will be the full host name used., So actually a user targeting <code>http://www.example.com</code> gets a cookie with domain www.example.com, and after redirection on <code>example.com</code> this cookie is not valid anymore.</p> <p>But if the cookie sent by your application, on both example.com or www.example.com contains:</p> <pre><code># Watchout there is a dot in front of the domain # required for old browsers to match subdomains domain=.example.com; </code></pre> <p>Then this cookie would be valid for both <code>http://example.com</code> and <code>http://www.example.com</code> (and in fact for any subdomin also). The client would manage it automatically, without any complex stuff in apache configuration.</p> <p>Instead the stuff is in the <strong>application responsible for the visitor_id cookie generation</strong>, if it's a PHP application this is defined by default in the in the <a href="http://www.php.net/manual/en/session.configuration.php#ini.session.cookie-domain" rel="nofollow">cookie_domain</a> setting, but it can also be enforced on <a href="http://php.net/manual/en/function.session-set-cookie-params.php" rel="nofollow">session_set_cookie_params</a> function usage. Of course such settings are also available for Java EE or .Net applications, in all web application you can have some control on the cookie domains.</p> <p>This could be used for a simple SSO mechanism or to track visitors between subdomains like in your case, and it's a very robust solution.</p>
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    1. POhtaccess from www to non-www bringing variable in session/cookie
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    1. USMike Braun
    1. USregilero
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    1. COStudying the subject I came the same conclusion: was enough to create a super-cookie in www.example.com, e.g. with php `setcookie("visitor_id", $id, time()+864000, "/", ".example.com");` which makes unnecessary all this .htaccess cooking.
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      1. USSalvador
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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