Confronto tra array e creazione di nuovo array solo con i dati uguali

[filippo.toso]

$search = [
    1, 2, 3, 4, 5, 6, 7,
];
 
$content = [
    5, 5, 6, 6, 7, 7, 7, 8, 9, 10,
];
 
$counts = array_count_values($content);
 
$results = [];
 
foreach ($search as $value) {
    if (isset($counts[$value])) {
        $results = array_merge($results, array_fill(0, $counts[$value], $value));
    }
}
 
print_r($results);