我使用的是一个简单的自定义插件，它将外部XML数据解析并保存为自定义字段中的序列化数组。这很好，但是，当我更新帖子而不是数组时，我只看到一条消息：“bool（false）”。
自定义字段的内容我试图使用序列化在WordPress Post（前端）上显示。
a:3:{s:8:"tb_88_40";a:20:{s:4:"guid";s:36:"26e4a3f6-afc4-457a-b34f-c09c3f4cfb1b";s:5:"title";s:11:"Casa Batllo";s:8:"language";s:1:"4";s:12:"languageCode";s:2:"en";s:8:"ticketID";s:2:"40";s:6:"ticket";s:5:"Adult";s:4:"link";s:54:"http://barcelona.ticketbar.eu/en/museums/casa-batllo-/";s:11:"description";s:3085:"
<h3><em>Architecture of Antoni Gaudi in Barcelona</em></h3>
<p align="justify"><span id="result_box" tc="null" a="undefined" c="4" closure_uid_3d5c4l="129" lang="en"><span class="hps" tc="null" closure_uid_3d5c4l="95">The colorful</span> <span class="hps" tc="null" closure_uid_3d5c4l="96">Casa</span> <span class="hps" tc="null" closure_uid_3d5c4l="97">Batlló</span><span tc="null" closure_uid_3d5c4l="98">,</span> <span class="hps" tc="null" closure_uid_3d5c4l="99">a</span> <span class="hps" tc="null" closure_uid_3d5c4l="100">house from the 19th</span> <span class="hps" tc="null" closure_uid_3d5c4l="101">century</span> <span class="hps" tc="null" closure_uid_3d5c4l="102">renovated in the well-known</span> <span class="hps" tc="null" closure_uid_3d5c4l="104">modernist</span> <span class="hps" tc="null" closure_uid_3d5c4l="105">style</span><span class="hps" tc="null" closure_uid_3d5c4l="106">, is</span> <span class="hps" tc="null" closure_uid_3d5c4l="107">one of many</span> <span class="hps" tc="null" closure_uid_3d5c4l="108">masterpieces</span> <span class="hps"
tc="null" closure_uid_3d5c4l="109">of Gaudí</span> <span class="hps" tc="null" closure_uid_3d5c4l="110">in Barcelona</span><span tc="null" closure_uid_3d5c4l="111">.</span> <span class="hps" tc="null" closure_uid_3d5c4l="112">The interior</span> <span class="hps" tc="null" closure_uid_3d5c4l="113">of the house</span> <span class="hps" tc="null" closure_uid_3d5c4l="117">is</span> <span class="hps" tc="null" closure_uid_3d5c4l="118">just as exceptional</span> <span class="hps" tc="null" closure_uid_3d5c4l="119">as the exterior</span> <span class="hps" tc="null" closure_uid_3d5c4l="120">of the building.</span></span> The building has become a famous landmark in Barcelona and is open for the public. The Casa Batlló was awarded the 2004 Europa Nostra Award for the Conservation of Cultural Heritage and was inscribed on the UNESCO World Heritage List in 2005. <span class="short_text" id="result_box" tc="null" a="undefined" c="4" closure_uid_3d5c4l="129" lang="en"><span class="hps" tc="null"
closure_uid_3d5c4l="256">Undoubtedly</span> <span class="hps" tc="null" closure_uid_3d5c4l="257">worth a visit</span><span tc="null" closure_uid_3d5c4l="258">.</span></span></p>
<p align="justify"><span class="short_text" id="result_box" tc="null" a="undefined" c="4" closure_uid_3d5c4l="129" lang="en"><span tc="null" closure_uid_3d5c4l="258"><em>Audioguide included available in: Spanish, English, French, Italian, German, Chinese,Japanese, Portuguese, Russian, and Catalan</em><br />
</span></span></p>
<p align="justify"><em><strong>Opening Hours</strong><br />
</em> Monday - Sunday from 9 a.m to 9 p.m (Last entrance at 8 p.m.)<br />
<em><br />
<strong>Location</strong><br />
</em> Passeig de Gracia 43<br />
08007 Barcelona<br />
Metro to Diagonal or Passeig de Gracia</p>
<em><strong>Ticket is valid for 3 months from date of purchase! Buy your ticket online and skip the line!</strong></em><br />
<br />
<br />
";s:12:"g:image_link";s:95:"http://barcelona.ticketbar.eu/barcelona/classificaties/museums/casa-batllo/casa-batllo_grid.jpg";s:8:"oldPrice";a:0:{}s:14:"disabled_dates";s:13:"
";s:9:"day_parts";s:13:"
";s:18:"visit_day_required";s:32:"
false
";s:7:"g:price";s:9:"EUR 21.50";s:11:"g:condition";s:3:"new";s:15:"g:item_group_id";s:2:"88";s:4:"g:id";s:6:"135218";s:6:"rating";a:0:{}s:16:"extraInformation";s:1:"i";s:15:"customerService";a:0:{}}s:9:"tb_88_704";a:20:{s:4:"guid";s:36:"26e4a3f6-afc4-457a-b34f-c09c3f4cfb1b";s:5:"title";s:11:"Casa Batllo";s:8:"language";s:1:"4";s:12:"languageCode";s:2:"en";s:8:"ticketID";s:3:"704";s:6:"ticket";s:11:"Child (0-6)";s:4:"link";s:54:"http://barcelona.ticketbar.eu/en/museums/casa-batllo-/";s:11:"description";s:3085:"
<h3><em>Architecture of Antoni Gaudi in Barcelona</em></h3>
<p align="justify"><span id="result_box" tc="null" a="undefined" c="4" closure_uid_3d5c4l="129" lang="en"><span class="hps" tc="null" closure_uid_3d5c4l="95">The colorful</span> <span class="hps" tc="null" closure_uid_3d5c4l="96">Casa</span> <span class="hps" tc="null" closure_uid_3d5c4l="97">Batlló</span><span tc="null" closure_uid_3d5c4l="98">,</span> <span class="hps" tc="null" closure_uid_3d5c4l="99">a</span> <span class="hps" tc="null" closure_uid_3d5c4l="100">house from the 19th</span> <span class="hps" tc="null" closure_uid_3d5c4l="101">century</span> <span class="hps" tc="null" closure_uid_3d5c4l="102">renovated in the well-known</span> <span class="hps" tc="null" closure_uid_3d5c4l="104">modernist</span> <span class="hps" tc="null" closure_uid_3d5c4l="105">style</span><span class="hps" tc="null" closure_uid_3d5c4l="106">, is</span> <span class="hps" tc="null" closure_uid_3d5c4l="107">one of many</span> <span class="hps" tc="null" closure_uid_3d5c4l="108">masterpieces</span> <span class="hps"
tc="null" closure_uid_3d5c4l="109">of Gaudí</span> <span class="hps" tc="null" closure_uid_3d5c4l="110">in Barcelona</span><span tc="null" closure_uid_3d5c4l="111">.</span> <span class="hps" tc="null" closure_uid_3d5c4l="112">The interior</span> <span class="hps" tc="null" closure_uid_3d5c4l="113">of the house</span> <span class="hps" tc="null" closure_uid_3d5c4l="117">is</span> <span class="hps" tc="null" closure_uid_3d5c4l="118">just as exceptional</span> <span class="hps" tc="null" closure_uid_3d5c4l="119">as the exterior</span> <span class="hps" tc="null" closure_uid_3d5c4l="120">of the building.</span></span> The building has become a famous landmark in Barcelona and is open for the public. The Casa Batlló was awarded the 2004 Europa Nostra Award for the Conservation of Cultural Heritage and was inscribed on the UNESCO World Heritage List in 2005. <span class="short_text" id="result_box" tc="null" a="undefined" c="4" closure_uid_3d5c4l="129" lang="en"><span class="hps" tc="null"
closure_uid_3d5c4l="256">Undoubtedly</span> <span class="hps" tc="null" closure_uid_3d5c4l="257">worth a visit</span><span tc="null" closure_uid_3d5c4l="258">.</span></span></p>
<p align="justify"><span class="short_text" id="result_box" tc="null" a="undefined" c="4" closure_uid_3d5c4l="129" lang="en"><span tc="null" closure_uid_3d5c4l="258"><em>Audioguide included available in: Spanish, English, French, Italian, German, Chinese,Japanese, Portuguese, Russian, and Catalan</em><br />
</span></span></p>
<p align="justify"><em><strong>Opening Hours</strong><br />
</em> Monday - Sunday from 9 a.m to 9 p.m (Last entrance at 8 p.m.)<br />
<em><br />
<strong>Location</strong><br />
</em> Passeig de Gracia 43<br />
08007 Barcelona<br />
Metro to Diagonal or Passeig de Gracia</p>
<em><strong>Ticket is valid for 3 months from date of purchase! Buy your ticket online and skip the line!</strong></em><br />
<br />
<br />
";s:12:"g:image_link";s:95:"http://barcelona.ticketbar.eu/barcelona/classificaties/museums/casa-batllo/casa-batllo_grid.jpg";s:8:"oldPrice";a:0:{}s:14:"disabled_dates";s:13:"
";s:9:"day_parts";s:13:"
";s:18:"visit_day_required";s:32:"
false
";s:7:"g:price";s:8:"EUR 0.00";s:11:"g:condition";s:3:"new";s:15:"g:item_group_id";s:2:"88";s:4:"g:id";s:6:"135219";s:6:"rating";a:0:{}s:16:"extraInformation";s:1:"i";s:15:"customerService";a:0:{}}s:10:"tb_88_1310";a:20:{s:4:"guid";s:36:"26e4a3f6-afc4-457a-b34f-c09c3f4cfb1b";s:5:"title";s:11:"Casa Batllo";s:8:"language";s:1:"4";s:12:"languageCode";s:2:"en";s:8:"ticketID";s:4:"1310";s:6:"ticket";s:12:"Child (7-17)";s:4:"link";s:54:"http://barcelona.ticketbar.eu/en/museums/casa-batllo-/";s:11:"description";s:3085:"
<h3><em>Architecture of Antoni Gaudi in Barcelona</em></h3>
<p align="justify"><span id="result_box" tc="null" a="undefined" c="4" closure_uid_3d5c4l="129" lang="en"><span class="hps" tc="null" closure_uid_3d5c4l="95">The colorful</span> <span class="hps" tc="null" closure_uid_3d5c4l="96">Casa</span> <span class="hps" tc="null" closure_uid_3d5c4l="97">Batlló</span><span tc="null" closure_uid_3d5c4l="98">,</span> <span class="hps" tc="null" closure_uid_3d5c4l="99">a</span> <span class="hps" tc="null" closure_uid_3d5c4l="100">house from the 19th</span> <span class="hps" tc="null" closure_uid_3d5c4l="101">century</span> <span class="hps" tc="null" closure_uid_3d5c4l="102">renovated in the well-known</span> <span class="hps" tc="null" closure_uid_3d5c4l="104">modernist</span> <span class="hps" tc="null" closure_uid_3d5c4l="105">style</span><span class="hps" tc="null" closure_uid_3d5c4l="106">, is</span> <span class="hps" tc="null" closure_uid_3d5c4l="107">one of many</span> <span class="hps" tc="null" closure_uid_3d5c4l="108">masterpieces</span> <span class="hps"
tc="null" closure_uid_3d5c4l="109">of Gaudí</span> <span class="hps" tc="null" closure_uid_3d5c4l="110">in Barcelona</span><span tc="null" closure_uid_3d5c4l="111">.</span> <span class="hps" tc="null" closure_uid_3d5c4l="112">The interior</span> <span class="hps" tc="null" closure_uid_3d5c4l="113">of the house</span> <span class="hps" tc="null" closure_uid_3d5c4l="117">is</span> <span class="hps" tc="null" closure_uid_3d5c4l="118">just as exceptional</span> <span class="hps" tc="null" closure_uid_3d5c4l="119">as the exterior</span> <span class="hps" tc="null" closure_uid_3d5c4l="120">of the building.</span></span> The building has become a famous landmark in Barcelona and is open for the public. The Casa Batlló was awarded the 2004 Europa Nostra Award for the Conservation of Cultural Heritage and was inscribed on the UNESCO World Heritage List in 2005. <span class="short_text" id="result_box" tc="null" a="undefined" c="4" closure_uid_3d5c4l="129" lang="en"><span class="hps" tc="null"
closure_uid_3d5c4l="256">Undoubtedly</span> <span class="hps" tc="null" closure_uid_3d5c4l="257">worth a visit</span><span tc="null" closure_uid_3d5c4l="258">.</span></span></p>
<p align="justify"><span class="short_text" id="result_box" tc="null" a="undefined" c="4" closure_uid_3d5c4l="129" lang="en"><span tc="null" closure_uid_3d5c4l="258"><em>Audioguide included available in: Spanish, English, French, Italian, German, Chinese,Japanese, Portuguese, Russian, and Catalan</em><br />
</span></span></p>
<p align="justify"><em><strong>Opening Hours</strong><br />
</em> Monday - Sunday from 9 a.m to 9 p.m (Last entrance at 8 p.m.)<br />
<em><br />
<strong>Location</strong><br />
</em> Passeig de Gracia 43<br />
08007 Barcelona<br />
Metro to Diagonal or Passeig de Gracia</p>
<em><strong>Ticket is valid for 3 months from date of purchase! Buy your ticket online and skip the line!</strong></em><br />
<br />
<br />
";s:12:"g:image_link";s:95:"http://barcelona.ticketbar.eu/barcelona/classificaties/museums/casa-batllo/casa-batllo_grid.jpg";s:8:"oldPrice";a:0:{}s:14:"disabled_dates";s:13:"
";s:9:"day_parts";s:13:"
";s:18:"visit_day_required";s:32:"
false
";s:7:"g:price";s:9:"EUR 18.50";s:11:"g:condition";s:3:"new";s:15:"g:item_group_id";s:2:"88";s:4:"g:id";s:6:"135220";s:6:"rating";a:0:{}s:16:"extraInformation";s:1:"i";s:15:"customerService";a:0:{}}}
这是我用于update_post_meta的功能。
function parse_file_func($title) {
// get_tickets_array();exit;
$language = explode('-', get_bloginfo('language'));
$language = $language[0];
$file = file_get_contents('http://vendor.ticketbar.eu/feed/284/');
// $file = file_get_contents('https://dl.dropboxusercontent.com/u/12344450/feed.xml');
if (!$file) {
exit;
}
$domObj = new xmlToArrayParser($file);
$domArr = $domObj->array;
if (($domObj->parse_error)) {
echo $domObj->get_xml_error();
} else {
$first = $domArr['rss']['channel']['item'];
foreach ($first as $item) {
if ($item['languageCode'] == $language) {
$args = array(
'meta_key' => 'tb_item_group_id',
'meta_value' => $item['g:item_group_id'],
'post_type' => 'tickets',
);
$post = get_posts($args);
if (empty($post)) {
continue;
} else {
$args = array(
'meta_key' => 'tb_item_group_id',
'meta_value' => $item['g:item_group_id'],
'post_type' => 'tickets',
);
$post = get_posts($args);
$post_id = $post[0]->ID;
$meta_values = get_post_meta($post_id, 'tb_data');
if (empty($meta_values)) {
$new_value_array = array();
unset($item['cdata']);
$new_value_array['tb_' . $item['g:item_group_id'] . '_' . $item['ticketID']] = $item;
} else {
$meta_arrays = unserialize($meta_values[0]);
$new_value_array = $meta_arrays;
foreach ($meta_arrays as $meta_ticketbar => $tb_content) {
if ($meta_ticketbar == 'tb_' . $item['g:item_group_id'] . '_' . $item['ticketID']) {
unset($item['cdata']);
$new_value_array[$meta_ticketbar] = $item;
} else {
$new_value_array = $meta_arrays;
unset($item['cdata']);
$new_value_array['tb_' . $item['g:item_group_id'] . '_' . $item['ticketID']] = $item;
}
}
}
update_post_meta($post_id, 'tb_data', serialize($new_value_array));
// update_post_meta($post_id, 'tb_data', base64_encode($new_value_array));
}
} else {
continue;
}
}
}
}
答案 0 :(得分：1)
当您使用get_post_meta发布meta时，如果值已序列化，则会自动反序列化返回值。
因此，该值将被反序列化两次，您将得到错误。
$value = get_post_meta(...);
在这种情况下，如果$值是序列化数据，则$ value已经被反序列化。
所以当你unserialize($value)时，你会得到假的。
此外，您不需要在保存post meta时序列化该值，因为如果它是数组类型，update_post_meta会自动序列化它。
答案 1 :(得分：0)
我已经成功解决了这个问题。
我使用以下代码来更新post meta
update_post_meta($post_id, 'tb_data', base64_encode(serialize($new_value_array)));
...并按照以下代码获取帖子
$tb_meta = get_post_meta($post->ID, 'tb_data', true);
$tb_meta_unserialized = unserialize(base64_decode($tb_meta));
我希望这会对某人有所帮助。