Question

我正在使用PHPs simple xml读取XML文件。 I遍历每个类别节点以显示包含的节点数据，具体取决于所选的类别，从而显示子类别。我需要检测某个类别何时没有子类别。我需要的是将所有的parent_id节点放入一个数组中，然后查看cat_id是否在数组中以检测它是否有任何依赖。

$cat_xml = simplexml_load_file(XML_PATH.'categories/'. $clientID . '.xml');

            //get all the categories and go through each one
            foreach($cat_xml as $cat){  
                if ( //WHAT GOES HERE?? ){
                    //display if cat is top level or has been selected 
                    if ($cat->parentID == $cat_parent_id){
                        //check product isn't set to hidden
                        if ($cat->visible == 1){
                            echo '<div class="catbox">';
                                echo "<a href=\"index.php?pageID=$pageID&cat_parent_id=$cat->id&cat_name=$cat->Name\"> $cat->Name </a><br />";
                            echo '</div>';
                        }
                    }
                } else {
                    echo '<p>There are no sub categories.</p>';
                }
            }

[编辑]
XML在下面，我需要获得一个“parentID”值数组

<categories> <category> <id>740073</id> <Name>Leetee Cat 1</Name> <parentID>0</parentID> <Description><![CDATA[Charlotte Balbier Weddinhg <em>dresses</em>,<strong> blah blah blah!!<br /> </strong>]]></Description> <imageURL>alice-charlotte-balbier-english-tea-party-collection-2011.jpg</imageURL> <sequence>0</sequence> <visible>1</visible> </category>

Answer 1

XPath可用于搜索包含当前类别的父ID的类别。

foreach($cat_xml as $cat) {
    $cat_id = intval($cat->id);
    // Find categories that call this one their parent
    $child_cats = $cat_xml->xpath("/categories/category[parentID/text()={$cat_id}]");
    if (!empty($child_cats)){
        //display if cat is top level or has been selected 
        if ($cat->parentID == $cat_parent_id){
            // ....
        }
    } else {
        echo '<p>There are no sub categories.</p>';
    }
}

php - simpleXML将相同的节点放入数组中

1 个答案: