Question

是的，我不确定如何提出这个问题。

让我试着举例说明我想在这里做些什么。

function getRecents()
{
    global $sql;
    $buffer = $sql->prepare("SELECT * FROM `foo` WHERE `exposure` = 'public' ORDER BY `id` DESC LIMIT 5");
    $buffer->execute();
    return $buffer->fetch(PDO::FETCH_OBJ);
}

while($pd = getRecents())
{
 echo $pd->id;
}

就像我下面要做的那样。很明显，因为我不止一次地使用它，所以我不会把它扔到这个地方。

    $buffer = $sql->prepare("SELECT * FROM `foo` WHERE `exposure` = 'public' ORDER BY `id` DESC LIMIT 5");
    $buffer->execute();
    while($foo = $buffer->fetch(PDO::FETCH_OBJ))
    echo $foo->id;

我认为有人会理解我想要做的事情，如果有的话请我很困惑。我会谷歌但不确定如何。

Answer 1

我想你应该尝试这样的事情：

function getRecents()
{
    global $sql;
    $buffer = $sql->prepare('SELECT * FROM foo WHERE exposure = "public" ORDER BY id DESC LIMIT 5');
    $buffer->execute();
    return $buffer->fetchAll(PDO::FETCH_OBJ);
}

$recents = getRecents();

foreach ($recents as $item) {
    echo $item->id;
}

Answer 2

如果存在一组对象/数组，则foreach循环会更好。

$buffer = $sql->prepare('SELECT * FROM foo WHERE exposure = "public" ORDER BY id DESC LIMIT 5');
$buffer->execute();
foreach($buffer->fetchAll(PDO::FETCH_OBJ) as $row) {
    print_r($row);
}

PDO制作while循环功能

2 个答案: