訪問數組中的SimpleXMLElements

Question

我已經看過類似的文章，例如this one，我無法完成它的工作，很可能我只是誤會。

我有一個簡單的腳本，它解析了一些xml並打印出特定的字段 - 我遇到麻煩的是訪問SimpleXMLElement對象的數據。

XML（簡化爲清楚起見）

<channel> 
    <item> 
    <title><![CDATA[Title is in here ...]]></title> 
    <description>Our description is in here!</description> 
    </item> 
</channel> 

PHP

$url = "file.xml"; 
$xml = simplexml_load_file($url, 'SimpleXMLElement', LIBXML_NOCDATA); 

foreach ($xml->channel->item as $item) { 
$articles = array(); 
$articles['title'] = $item->title; 
$articles['description'] = $item->description; 
} 

到現在爲止，一切似乎確定。我最終的內容的陣列，我可以用print_r確認，這是我得到的結果：

Array 
(
    [title] => SimpleXMLElement Object 
     (
      [0] => Title is in here ... 
     ) 

    [description] => SimpleXMLElement Object 
     (
      [0] => Our description is in here! 
     ) 
) 

關鍵的問題

我如何再進入[標題] [0]或[描述] [0]？

我已經嘗試了一些沒有成功的變體，很可能是某處的菜鳥錯誤！

foreach ($articles as $article) { 
     echo $article->title; 
    } 

和

foreach ($articles as $article) { 
     echo $article['title'][0]; 
    } 

和

foreach ($articles as $article) { 
     echo $article['title']; 
    } 

Answer 1

如果你真的不想簡單地傳遞的SimpleXMLElement但把值數組第一....

<?php 
// $xml = simplexml_load_file($url, 'SimpleXMLElement', LIBXML_NOCDATA); 
$xlm = getData(); 

$articles = array(); 
foreach ($xml->channel->item as $item) { 
    // with (string)$item->title you get rid of the SimpleXMLElements and store plain strings 
    // but you could also keep the SimpleXMLElements here - the output is still the same. 
    $articles[] = array(
    'title'=>(string)$item->title, 
    'description'=>(string)$item->description 
); 
} 

// .... 
foreach($articles as $a) { 
    echo $a['title'], ' - ', $a['description'], "\n"; 
} 

function getData() { 
    return new SimpleXMLElement('<foo><channel> 
    <item> 
     <title><![CDATA[Title1 is in here ...]]></title> 
     <description>Our description1 is in here!</description> 
    </item> 
    <item> 
     <title><![CDATA[Title2 is in here ...]]></title> 
     <description>Our description2 is in here!</description> 
    </item> 
    </channel></foo>'); 
} 

打印

Title1 is in here ... - Our description1 is in here! 
Title2 is in here ... - Our description2 is in here! 

Answer 2

我認爲當你將值分配給數組你有一個錯誤：

foreach ($xml->channel->item as $item) { 
    $articles = array(); 
    $articles['title'] = $item->title; 
    $articles['description'] = $item->description; 
} 

，如果你有的foreach爲什麼你在每一步創建新數組$ articles = array（）;

$articles = array(); 
foreach ($xml->channel->item as $item) { 
     $articles['title'] = $item->title; 
     $articles['description'] = $item->description; 
}