Add/update and display an array of meta_values - mysql

Question

I am trying to add an array of meta_values to a single meta_key and display them in a list like so:
Assessment One, Passed
Assesment Two, Passed
My code for updating/adding the user_meta:
$user_id = $current_user->ID;
$key = 'assessment_result';
$assessment_name = get_the_title();
$new_value = array($assessment_name, 'Passed');
$meta = get_user_meta($user_id, $key, false);
if ( ! array($meta) ) {
$meta = array();
}
$meta[] = $new_value;
update_user_meta($user_id, $key, $meta, $unique);
After completing two assessments, my array looks like this:
Array ( [0] => Array ( [0] => Array ( [0] => Array ( [0] => Assessment Two [1] => Passed ) ) [1] => Array ( [0] => Assessment One [1] => Passed ) ) ) 1
There seems to be too many arrays!
Then my query looks like this:
$user_assessment_results = get_user_meta($user_id, 'assessment_result', true);
echo '<ul>';
foreach ($user_assessment_results as $user_assessment_result) {
echo '<li>';
$output = array();
foreach ($user_assessment_result as $result_item) {
$output[] = $result_item;
}
if( count( $output ) ) echo join( ", ", $output );
echo '</li>';
}
echo '</ul>';
Which results in:
Array
Assessment One, Passed
Can you suggest where I am going wrong?

Answer 1

I found the problem $meta = get_user_meta($user_id, $key, false); should have been $meta = get_user_meta($user_id, $key, true);