我的数组问题

时间:2013-02-01 21:42:22

标签: php arrays

好的,我有一个问题。我想设置一个新闻源,这将显示用户在收到订单时收到的问题和评论。我设置了一个功能来完成所有这些。我再次不知道它是否最有效但我只想让它发挥作用。所以这就是我所拥有的

public function foo ()
{
    //Retrieve all of the questions
    $Statement = $this->Database->prepare("SELECT * FROM table WHERE condition = ?");
    $Statement->execute(array($this->variable));

    while ($row = $Statement->fetch(PDO::FETCH_ASSOC))
    {
        $id[]           = $row["id"];
        $question[]     = $row["question"];
        $asker[]        = $row["asker"];
        $timestamp[]    = $row["timestamp"];
        $likes[]        = $row["likes"];
    }

    $iLimit = count($id); //Set a limit based on the size of the array

    if ($iLimit > 0)
    {
                    //Save everything in an array for the questions
        for ($iCount = 0; $iCount < $iLimit; $iCount++)
        {
            $question[$iCount] = Array ( "id"           => $id[$iCount],
                                         "text"         => $question[$iCount],
                                         "username"     => $asker[$iCount],
                                         "timestamp"    => $timestamp[$iCount],
                                         "likes"        => $likes[$iCount] );
        }
    }

    //Retrieve all of the comments
    $Statement = $this->Database->prepare("SELECT * FROM table WHERE condition = ?");
    $Statement->execute(array($this->variable));

    while ($row = $Statement->fetch(PDO::FETCH_ASSOC))
    {
        $id[]           = $row["id"];
        $comment[]      = $row["comment"];
        $commenter[]    = $row["commenter"];
        $timestamp[]    = $row["timestamp"];
        $likes[]        = $row["likes"];
    }

    $iLimit = count($id); //Set a limit based on the size of the array

    if ($iLimit > 0)
    {
                    //Save everything in an array for comments
        for ($iCount = 0; $iCount < $iLimit; $iCount++)
        {
            $comment[$iCount] = Array ( "id"            => $id[$iCount],
                                        "text"          => $comment[$iCount],
                                        "username"      => $commenter[$iCount],
                                        "timestamp"     => $timestamp[$iCount],
                                        "likes"         => $likes[$iCount] );
        }
    }

    //Merge the two arrays
    $aNewsFeed = array_merge($question, $comment);

    foreach ($aNewsFeed as $row) 
    {
        $aOrdered[]  = $row["timestamp"];
    }

    array_multisort($aOrdered, SORT_DESC, $aNewsFeed); //Sort the array

    return $aNewsFeed;
} //end getNewsFeed

然后我使用foreach循环调用它

foreach ($Class->foo() as $news) 
{
    echo $news["text"]
}

但每次它总是给出foreach循环的两个额外的空白贯穿。或者我不知道它是否实际上是数组的一部分,因为如果它是foreach循环的问题,它通常会发出错误。我认为它必须是array_merge()函数的问题,但我不完全确定。有什么想法吗?

感谢您的帮助。对此,我真的非常感激。

2 个答案:

答案 0 :(得分:0)

您似乎正在使用数组$id$likes等作为临时变量,但在第二次使用它们之前您没有重置它们,因此您的$id数组将具有当你开始将它用于评论时,问题就在其中。

在您(重新)使用它们之前,您应该始终初始化数组:

$id = array();
// first loop

$id = array();
// second loop

答案 1 :(得分:0)

foreach ($Class->foo() as $news) 
{
    if($news["text"]!=""){
        echo $news["text"];
    }
}