Test

test.php

function test($q)
{
    global $pdo;

    $sth = $pdo->prepare("SELECT * FROM faq WHERE title LIKE ? OR message LIKE ?");
    
    $data = explode(' ', $q);

    foreach($data as $element) {

        if(strlen($element) > 3) {

            $sth->execute([

                '%' . $element . '%',
                '%' . $element . '%',

            ]);

            if ($sth->fetchObject() != null) {

                print $sth->fetchObject()->titre_faq;

            }
        }
    }

    return;

}

$test = test('Add a video .');