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This function returns the value of a specific metakey pertaining to the user whose ID is passed via the userid parameter.
Version 2.9.2 currently requires the use of this function despite previous notes stating that it is deprecated. Using the new function causes undefined function error.
<?php get_usermeta( $userid, $metakey ); ?>
This example returns and then displays the last name for user id 9.
<?php $user_last = get_usermeta(9,'last_name'); ?>
<?php echo('User ID 9's last name: ' . $user_last . '\n'); ?>