How to use edit_user_profile filter in WordPress

When you’re working with WordPress customizations, hooks are your best friend. Trust me, as an Indian developer who’s spent countless hours tweaking WordPress sites, I can vouch for their power. One such hook is the edit_user_profile filter. This hook is fired after the ‘About the User’ settings table on the ‘Edit User’ screen. To use it, you’ll need to register it with add_filter. You can pop this code into your theme’s functions.php file or, ideally, in a custom WordPress plugin to ensure your modifications remain intact even after theme updates.

Adding User Meta Birthday Form

Here’s how you can add a birthday field to the user profile form:

function weplugins_userMetaBirthdayForm(WP_User $user) {
?>
<h2>Birthday</h2>
    <table class="form-table">
        <tr>
            <th><label for="user_birthday">Birthday</label></th>
            <td>
                <input
                    type="date"
                    value="<?php echo esc_attr(get_user_meta($user->ID, 'birthday', true)); ?>"
                />
            </td>
        </tr>
    </table>
<?php
}
add_action('edit_user_profile', 'weplugins_userMetaBirthdayForm');

Modifying User Profile Defaults

Here’s an example of modifying user profile defaults:

function weplugins_modify_edit_user_profile_defaults($profile_user) { 
    // Update the $profile_user variable according to your requirements.
    return $profile_user; 
}
// add the filter
add_filter("edit_user_profile", "weplugins_modify_edit_user_profile_defaults", 10, 1);

Removing the Hook Callback

If you ever need to remove a hook callback, follow this example:

remove_filter("edit_user_profile", "weplugins_modify_edit_user_profile_defaults", 10, 1);

Ensure you provide the same callback function name, priority, and number of arguments to successfully remove the hook.

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