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I am writing a plugin that fetches some extended user info from a remote service and I need it to execute its function each time a user logs in.

Is there a hook that gets fired after login that I can add an action to?

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2 Answers 2

up vote 16 down vote accepted

The action hook wp_login runs when the user logs in - it can run a simple function.

function do_anything() {
    //do stuff
add_action('wp_login', 'do_anything');

documentation :

The real breadwinner here is wp_authenticate which has a bit of documentation. It passes an array with the given username and password, which gives you the opportunity to pass info to the remote service, if necessary.

and to change the redirect URL after login, there is the filter login_redirect:

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no this runs when user clicks on login but before user gets verified. is there any hook that runs after user login and authentication success?????? – user13690 Feb 29 '12 at 21:06
whoopsie... I'll check and update the answer. – Drew Gourley Feb 29 '12 at 23:00
Checked, wp_login does run after authentication. What specifically do you need done? – Drew Gourley Feb 29 '12 at 23:07
wp_authenticate was what I was looking for. Thanks! – Adam Franco May 24 '12 at 19:35

I would caution against using wp_login. It is deprecated and in later versions of WordPress it may not work at all. Instead try the wp_signon function.

Edit: The wp_login function is depreciated but the wp_login action is fine to use.

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protected by toscho Aug 1 '12 at 21:01

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