if then nested statements cause page not to load - php

Question

As per the suggestions of others I have added to the initial code. Same result:
I am having an issue with the following if statement.
When it finds results on either of the two conditions it works great and returns the results using the for each statement. If there are no results then the page doesn't load completely. I have tried using die; in a number of locations which did not improve the functions or make this work.
NEW CODE
if (!empty($query)) {
foreach ($query as $available) {
echo $available->column1 . "<br>\n";
}
} elseif (empty($query)) {
$query_plus->get_results($wpdb->prepare("SELECT column1 FROM mytable"));
foreach ($query as $available_plus_2) {
echo $available_plus_2->column1 . "<br>\n";
}
} elseif (!empty($query_plus)) {
echo "nothing here";
}

Answer 1

if (!empty($query)) {
foreach ($query as $available) {
echo $available->column1 . "<br>\n";
}
} elseif (empty($query)) {
$query_plus=$wpdb->get_results($wpdb->prepare("SELECT column1 FROM mytable"));
foreach ($query as $available_plus_2) {
echo $available_plus_2->column1 . "<br>\n";
}
} elseif (!empty($query_plus)) {
echo "nothing here";
}
The $wpdb-> is necessary before the prepare. Since WP is very bad at error reporting adding ini_set('display_errors', 1); ini_set('display_startup_errors', 1); error_reporting(E_ALL); to the top of the functions page will allow all fatal errors to be seen