2013-07-22 23 views
0

我需要加載大量的XML源並將信息保存到數據庫。我無法控制XML字段,但它們通常包含唯一的ID,標題,貨幣,價格和持續時間。數據庫中的XML標記

代碼下面僅以1個飼料做工精細:

function process_xml_file($path, $adv_id) 
{ 

$xml = simplexml_load_file($path, 'SimpleXMLElement', LIBXML_NOCDATA); 

$data = array(); 
$finished = array(); 
$counter = 0; 

// loop through all items 
foreach($xml->product as $product) 
{ 
    $product_id = strip_tags((string)$product->productID); 

    if(!in_array($product_id, $finished)) 
    { 
     $country = $product->xpath('./extra/field[@name="country"]'); 
     $data[$counter]['country'] = strip_tags((string)$country[0]); 

     $data[$counter]['title'] = strip_tags((string)$product->name); 
     $data[$counter]['currency'] = strip_tags((string)$product->price['currency']); 
     $data[$counter]['price'] = strip_tags((string)$product->price); 

     $duration = $product->xpath('./extra/field[@name="duration"]'); 
     $data[$counter]['duration'] = strip_tags((string)$duration[0]); 

     // add this product to the finished array, we want to exclude duplicates 
     $finished[$counter] = $product_id; 

     $counter++; 
    } 
} 
return $data; // the data will be saved to database in an other method 

}

我想拯救之類的東西PROD_ID和XPath(」 ./額外/場[@名稱= 「國」 ]'),因此我可以使用eval()輕鬆檢索不同Feed字段的值。我知道eval()是邪惡的,並且可以提供更好的建議。我是唯一一個處理這種數據的人,所以eval()的危險可能比平常小一些。

檢索PRODUCT_ID和標題工作正常,問題是在使用國家和持續時間的XPath,eval()函數將拋出類似的錯誤:

Parse error: syntax error, unexpected '"xpath('./additional/field[@na' (T_CONSTANT_ENCAPSED_STRING), expecting identifier (T_STRING) or variable (T_VARIABLE) or '{' or '$' in C:\xampp\htdocs\project\feed.php(220) : eval()'d code on line 1 

例子:

// simple xml object of all products 
$children = $xml->children(); 

$country = $tag['country']; // $tag is from the db 

// loop through all products 
foreach($children as $product) 
{ 
    $id = strip_tags($product->$product_id); 

    $country = $product->$country; 
    eval("\$country2 = \$product->\"{$country}\";"); 

    echo $country2; 
} 

我的數據庫表:

CREATE TABLE IF NOT EXISTS `tbl_feeds_xml_tags` (
    `id` int(11) NOT NULL AUTO_INCREMENT, 
    `feed_id` int(11) NOT NULL, 
    `country` varchar(100) COLLATE utf8_unicode_ci NOT NULL, 
    `product_id` varchar(100) COLLATE utf8_unicode_ci NOT NULL, 
    `title` varchar(100) COLLATE utf8_unicode_ci NOT NULL, 
    `currency` varchar(100) COLLATE utf8_unicode_ci NOT NULL, 
    `price` varchar(100) COLLATE utf8_unicode_ci NOT NULL, 
    `duration` varchar(100) COLLATE utf8_unicode_ci NOT NULL, 
    PRIMARY KEY (`id`), 
    KEY `feed_id` (`feed_id`) 
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=1 ; 

來自表格的結果:

Array 
(
    [id] => 1 
    [feed_id] => 1 
    [country] => xpath('./additional/field[@name="country"]') 
    [product_id] => productID 
    [title] => name 
    [currency] => price['currency'] 
    [price] => price 
    [duration] => xpath('./additional/field[@name="duration"]') 
) 

XML飼料例如:

<?xml version="1.0" encoding="iso-8859-1"?> 
<products> 
    <product> 
    <productID>32934</productID> 
    <name>Cruise Antillen en Zuid-Amerika &amp; strand Curaçao</name> 
    <price currency="EUR">1405.00</price> 
    <extra> 
     <field name="country">Panama</field> 
     <field name="duration">12</field> 
    </extra> 
    </product> 
    .. 
    etc. 
    .. 
</products> 

我的問題是:如何才能讓我對所有飼料此功能工作?請記住,在其他Feed中,prod_id或country標籤的命名完全不同。

我想不起來,已經爲此掙扎了好幾天,在這個論壇上找不到答案。

對eval()替代品的建議也歡迎!

請在你的答案中明確,因爲我是一個PHP新手。

+0

即使是你想要什麼 – Soundz

回答

0

爲什麼你甚至需要eval()?如果您存儲了檢索每個提要所需值的xpath表達式,則只需檢索該表達式並將其傳遞給DOM系統(例如,

數據庫:

feeds (id, url) 
feed_xpath (id, feed_id, value_being_fetched, xpath_expression) 

拉起特定進料,例如http://example.com/feed.xml,然後拉起及其相關的XPath的東西:

$dom = new DOMDocument(); 
$dom->loadHTML($feed_url); 
$xpath = new DOMXPath($dom); 

$values = array(); 
foreach($feeds as $feed) { // $feeds being selected from the feeds_xpath table 
    $nodelist = $xpath->query($feed['xpath']) 
    foreach($nodelist as $node) { 
     $array[$feed['value_being_fetched']] = $node->nodeValue; 
    } 
} 
+0

謝謝@Marc B.我收到了你的代碼的工作文字我仍然不明白的一堵牆,但它只返回1排結果是因爲$ array [$ feed ['value_being_fetched']]。我怎樣才能改變$數組,以整齊排列所有結果與一個唯一的ID(例如xml文件中的productID)? –