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<?php
add_action('peepso_action_profile_field_save', 'hook', 10, 1);
 
/*
* Send an email to admin each time a new group is created
*/
function hook($field) {
    $msg = 'User ' . get_current_user_id() . ' changed field {$field->id} from {$field->old_value} to {$field->value}';
    error_log($msg);
}