PHP çoklu veri ekleme

function insert($table, $data) {
    $connect = new PDO("mysql:host=localhost;dbname=testing", 'root', '');

    $keys = array_keys($data[0]);
    $columns = implode(',', $keys);

    $values = array();
    foreach ($data as $rowValues) {
        $rowValues = array_map(function($value) use ($connect) {
            return $connect->quote($value);
        }, $rowValues);
        $values[] = '(' . implode(',', $rowValues) . ')';
    }
    $values = implode(',', $values);

    $query = "
        INSERT INTO $table
        ($columns)
        VALUES
        $values
    ";

    $statement = $connect->prepare($query);
    if($statement->execute()){
        return true;
    }
    else{
        return false;
    }
}

$data = array(
    array('ad' => "Kemal", 'soyad' => "Sunal"),
    array('ad' => "Şener", 'soyad' => "Şen"),
    array('ad' => "Sadri", 'soyad' => "Alışık"),
);
insert('oyuncular', $data);