php - mysql随机选择100行数据中最新15条

Question

$sql = "SELECT `url`,`title`,`vid` FROM `video` ORDER BY `time` DESC limit 15";
$stmt = $pdo->prepare($sql);
$stmt->execute();
$row = $stmt->fetchAll(PDO::FETCH_ASSOC);

该SQL可以选择新的前15行数据。

我想显示前 100 名，但只显示 15 名

如何更快地选择？

Answer 1

$sql = "SELECT `url`,`title`,`vid` FROM `video` ORDER BY `time` DESC limit 100";

我假设$row[0] =>给出第一条记录。

--

function UniqueRandomNumbersWithinRange($min, $max, $quantity) {
    $numbers = range($min, $max);
    shuffle($numbers);
    return array_slice($numbers, 0, $quantity);
}

--

foreach (UniqueRandomNumbersWithinRange(0,100,15) as $row_number)
{
   $content=$row[$row_number];
   echo $content['title'];
}