- print_r: documentation ( source)
<?php
$keys = [1,2];
$items = [];
foreach ($keys as $i => $key) {
$item = null;
if (!empty($item)) {
$items[$i] = $item;
} else {
$items[$i] = null;
}
}
$result = array();
if(!empty($items)){
print_r($items);
}