我希望有人可以帮助我或指出我正确的方向。我花了一个星期的时间试图弄清楚如何访问和更新WP电子商务中的权重字段，并且我没有成功访问它并更新新值。
我正在使用的脚本访问网站以获取漫画信息。然后它解析xml文件中的数据，并为第二个分配变量，用于特定于WP电子商务的值。
整个脚本工作得很漂亮，并为每个漫画书创建产品页面，所有数据都添加到每个产品中。除了一个！我已经被困了一个星期试图找出如何访问元并更新它。这是权重和weight_unit的_wpsc_product_metadata数组以及存储在其中的其他元值。
漫画重约3盎司，我一直试图将这个值分配给每张卡，因为它创建了“3”和“盎司” - 我没有成功。
我尝试过这么多不同的方式，从挖掘电子商务代码到网络浏览，阅读多维数组，序列化数组，而不是点击我的noggin'。请记住，我过去一个月只使用PHP进行编程，而在一个月之前，除了15年前涉及C和C ++之外，我对代码一无所知。当时，它主要是复制现有代码并更改MUDS（多用户地下城）中的输出 - 当在线游戏是基于文本的时候，大声笑。
我以为我可以使用以下方式访问WP Ecommerce meta：
get_post_meta($post_id, '_wpsc_product_metadata', true); That did not work.
我尝试了其他完成此操作的方法：
get_post_meta(get_the_id($post_id), '_wpsc_product_metadata', true); // no success
我尝试使用它的特定产品ID：
get_the_id(300), or just '300', i've used single quotes double quotes no qoutes, "{}", etc etc etc etc
现在我用过：
get_post_meta($post_id, ''); //while in the loop
输出SKU和价格的值，但不输出_wpsc_product_metadata中的内容
然后当我使用它时：
$product_data['meta'] = array();
$product_data['meta'] = maybe_unserialize(get_post_meta('$post_id', '' ));
这是我在print_r
时得到的Array ( [_wpsc_price] => Array ( [0] => Array ( [0] => 19.99 ) )
[_wpsc_sku] => Array ( [0] => Array ( [0] => 978-0-7851-5209-5 ) ) )
所以我尝试了另外一件事，我进入了一个特定的产品，我手动将重量设置为5，我更改了代码如下：
$product_data['meta'] = array();
$product_data['meta'] = maybe_unserialize(get_post_meta( '44317', '' ));
这是输出：
Array ( [_wpsc_stock] => Array ( [0] => Array ( [0] => ) )
[_wpsc_product_metadata] => Array ( [0] => Array ( [0] =>
a:19:{s:25:"wpec_taxes_taxable_amount";s:0:"";s:13:"external_link";s:0:
"";s:18:"external_link_text";s:0:"";s:20:"external_link_target";s:0:"";s:6:
"weight";s:3:"0.3";s:11:"weight_unit";s:5:"pound";s:10:"dimensions";a:6:
{s:6:"height";s:1:"0";s:11:"height_unit";s:2:"in";s:5:"width";s:2:"0
";s:10:"width_unit";s:2:"in";s:6:"length";s:1:"0";s:11:"length_unit";
s:2:"in";}s:8:"shipping";a:{s:5:"local";s:1:"0";s:13:"international";s:1:"0";}
s:14:"merchant_notes";s:0:"";s:8:"engraved";s:1:"0";s:23:
"can_have_uploaded_image";s:1:"0";s:15:"enable_comments";s:0:"";
s:24:"unpublish_when_none_left";s:1:"0";s:11:"no_shipping";s:1:"0";s:16:
"quantity_limited";s:1:"0";s:7:"special";s:1:"0";s:17:"display_weight_as";s:5:
"pound";s:16:"table_rate_price";a:2:{s:8:"quantity";a:0:{}s:11:"table_price";a:0:
{}}s:17:"google_prohibited";s:1:"0";} ) ) [_wpsc_special_price] => Array ( [0] =>
Array ( [0] => 0 ) ) [_edit_last] => Array ( [0] => Array ( [0] => 1 ) )
[_edit_lock] => Array ( [0] => Array ( [0] => 1333358836:1 ) ) [_wpsc_sku] =>
Array ( [0] => Array ( [0] => 978-0-7851-6421-0 ) ) [_wpsc_price] => Array
( [0] => Array ( [0] => 24.99 ) ) [_wpsc_is_donation] => Array ( [0] => Array (
[0] => 0 ) ) [_wpsc_currency] => Array ( [0] => Array ( [0] => a:0:{} ) ) )
我希望，不，我乞求有人可以启发我，并告诉我如何访问和更新存储在_wpsc_product_metadata中的数据，特别是weight和weight_unit，如果你知道如何知道如何更好，你可以给我看一个例子，将新创建的帖子权重更新为一个值，并将默认的weight_unit从磅改为盎司。
以下是供参考的代码：
<?php
function scraping_comic()
{
$html = file_get_html('http://site-to-strip.com/');
$matches = str_replace (' ', ' ', $article);
foreach($html->find('li.browse_result') as $article)
{
// get comic title
$item['title'] = trim($article->find('h4', 0)->find('span',0)->outertext);
// get comic title url
$item['title_url'] = trim($article->find('h4', 0)->find('a.grid-hidden',0)->href);
// get comic image
$item['image_url'] = trim($article->find('img.main_thumb',0)->src);
// get comic excerpt
$item['excerpt'] = trim($article->find('p.browse_result_description_release', 0)->plaintext);
// get comic sales info
$item['on_sale'] = trim($article->find('.browse_comics_release_dates', 0)->plaintext);
// strip numbers and punctuations
$item['title2'] = trim(preg_replace("/[^A-Za-z-\t\n\s]/","",$article->find('h4',0)->find('span',0)->plaintext));
$item['title3'] = trim(preg_replace("/[^A-Za-z]/","",$article->find('h4',0)->find('span',0)->plaintext));
$ret[] = $item;
}
$html->clear();
unset($html);
return $ret;
}
$ret = scraping_comic();
if ( ! empty($ret))
{
foreach($ret as $v)
{
//download the image
$url = $v['image_url'];
$title = $v['title3'];
$now = time();
$num = date("w");
if ($num == 0)
{ $sub = 6; }
else { $sub = ($num-1); }
$WeekMon = mktime(0, 0, 0, date("m", $now) , date("d", $now)-$sub, date("Y", $now));
$todayh = getdate($WeekMon);
$d = $todayh[mday];
$m = $todayh[mon];
$y = $todayh[year];
$date_stamp = $d.$m.$y;
//scrape inside pages
$scrape = 'http://domain.com';
$comic_details = $v['title_url'];
$comic_details_url = $scrape.$comic_details;
$url2 = file_get_html($comic_details_url);
foreach($url2->find('.comics_detail_lead_left_panel_content') as $the_details);
$matches = str_replace (' ', ' ', $the_details);
{
$item2['image2_url'] = trim($the_details->find('img.frame-img',0)->src);
$item2['full_desc'] = trim($the_details->find('p',0)->plaintext);
$item2['data'] = trim($the_details->find('dl',0)->plaintext);
}
$url2->clear();
unset($url2);
//download medium-sized image
$root2 = ('/home/****/public_html/wp-content/blogs.dir/14/files/comics/' .$title.$date_stamp. '-medium.jpg');
$image2 = $item2['image2_url'];
copy($image2, $root2);
unset($root2);
unset($image2);
//match specific data and assign variables
$string = $item2['data'];
$number = preg_match("/(Comic|Hardcover|Paperback)[^A-Za-z]+/", $string, $fields);
switch ($fields[1])
{
case ('Comic'):
$cat = array(51, 52);
break;
case ('Hardcover'):
$cat = array(85, 52);
break;
case ('Paperback'):
$cat = array(95, 52);
break;
default: "";
}
$number = preg_match("/((January)|(February)|(March)|(April)|(May)|(June)|(July)|(August)|(September)|(October)|(November)|(December))[^A-Za-z0-9,]+[A-Za-z0-9,\s]+/", $string, $fields);
$date = $fields[0];
$number = preg_match("/((UPC)|(ISBN))[^0-9-]+([0-9-]+)/", $string, $fields);
$upc = $fields[4];
$number = preg_match("/((Price))[^0-9.]+([0-9.\s]+)/", $string, $fields);
$price = $fields[3];
$full_desc = $item2['full_desc'];
$maintitle = $v['title'];
$excerpt = $v['excerpt'];
$comic_post = array();
$comic_post['post_title'] = wp_strip_all_tags($maintitle);
$comic_post['post_content'] = wp_strip_all_tags($full_desc);
$comic_post['post_status'] = 'publish';
$comic_post['post_author'] = 1;
$comic_post['post_type'] = 'wpsc-product';
$comic_post['post_category'] = $cat;
$comic_post['comment_status'] = 'closed';
$comic_post['ping_status'] = 'closed';
$comic_post['post_excerpt'] = wp_strip_all_tags($excerpt);
// create comic book
$post_id = wp_insert_post( $comic_post );
// category insertion does not work fixed this by calling wp_set_post_terms
wp_set_post_terms($post_id, $cat, 'wpsc_product_category' );
$wpsc_custom = update_post_meta;
$wpsc_custom($post_id, '_wpsc_price', $price);
$wpsc_custom($post_id, '_wpsc_sku', $upc);
//Gain access to WP Ecommerce meta data and assign new values to weight ***IN PROGRESS***
$product_data['meta'] = array();
$product_data['meta'] = maybe_unserialize(get_post_meta( $post_id, '' ));
//***TESTING***//
echo '<br /> the data <br />';
print_r($product_data['meta']);
//Set featured image for product
$filename = ('comics/' .$title .$date_stamp. '-medium.jpg');
update_post_meta( $post_ID, 'image_thumbnail', $imgloc );
set_featured_image($post_id, $filename);
}
}
else { echo 'Could not scrape site!'; }
?>
答案 0 :(得分：1)
在WP电子商务撰稿人的帮助下，这里缺少更新重量的拼图。
if(!isset($product_data['meta']) || !is_array($product_data['meta'])) {
$product_data['meta'] = array();
}
if(!isset($product_data['meta']['_wpsc_product_metadata'])) {
$product_data['meta']['_wpsc_product_metadata'] =
maybe_unserialize(get_post_meta($post_id, '_wpsc_product_metadata', true));
}
if(!is_array($product_data['meta']['_wpsc_product_metadata'])) {
$product_data['meta']['_wpsc_product_metadata'] = array();
}
$product_data['meta']['_wpsc_product_metadata']['weight_unit'] = 'ounce';
$product_data['meta']['_wpsc_product_metadata']['weight'] = 0.19;
update_post_meta($post_id, '_wpsc_product_metadata', $product_data['meta']['_wpsc_product_metadata']);
答案 1 :(得分：0)
对于那些没有编程这么长时间而且最近只看过PHP的人，你似乎做得很好。
关于数组。 _wpsc_product_metadata似乎是JSON。您应该查看PHP手册，特别是下面链接的与JSON相关的部分。
http://php.net/manual/en/book.json.php
如果使用json_decode，您将能够检索具有您需要的属性作为对象属性的对象。