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Item.php
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Item.php
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<?php
/**
* SimplePie
*
* A PHP-Based RSS and Atom Feed Framework.
* Takes the hard work out of managing a complete RSS/Atom solution.
*
* Copyright (c) 2004-2016, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* * Neither the name of the SimplePie Team nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
* AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* @package SimplePie
* @copyright 2004-2016 Ryan Parman, Geoffrey Sneddon, Ryan McCue
* @author Ryan Parman
* @author Geoffrey Sneddon
* @author Ryan McCue
* @link http://simplepie.org/ SimplePie
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
*/
/**
* Manages all item-related data
*
* Used by {@see SimplePie::get_item()} and {@see SimplePie::get_items()}
*
* This class can be overloaded with {@see SimplePie::set_item_class()}
*
* @package SimplePie
* @subpackage API
*/
class SimplePie_Item
{
/**
* Parent feed
*
* @access private
* @var SimplePie
*/
var $feed;
/**
* Raw data
*
* @access private
* @var array
*/
var $data = array();
/**
* Registry object
*
* @see set_registry
* @var SimplePie_Registry
*/
protected $registry;
/**
* Create a new item object
*
* This is usually used by {@see SimplePie::get_items} and
* {@see SimplePie::get_item}. Avoid creating this manually.
*
* @param SimplePie $feed Parent feed
* @param array $data Raw data
*/
public function __construct($feed, $data)
{
$this->feed = $feed;
$this->data = $data;
}
/**
* Set the registry handler
*
* This is usually used by {@see SimplePie_Registry::create}
*
* @since 1.3
* @param SimplePie_Registry $registry
*/
public function set_registry(SimplePie_Registry $registry)
{
$this->registry = $registry;
}
/**
* Get a string representation of the item
*
* @return string
*/
public function __toString()
{
return md5(serialize($this->data));
}
/**
* Remove items that link back to this before destroying this object
*/
public function __destruct()
{
if ((version_compare(PHP_VERSION, '5.3', '<') || !gc_enabled()) && !ini_get('zend.ze1_compatibility_mode'))
{
unset($this->feed);
}
}
/**
* Get data for an item-level element
*
* This method allows you to get access to ANY element/attribute that is a
* sub-element of the item/entry tag.
*
* See {@see SimplePie::get_feed_tags()} for a description of the return value
*
* @since 1.0
* @see http://simplepie.org/wiki/faq/supported_xml_namespaces
* @param string $namespace The URL of the XML namespace of the elements you're trying to access
* @param string $tag Tag name
* @return array
*/
public function get_item_tags($namespace, $tag)
{
if (isset($this->data['child'][$namespace][$tag]))
{
return $this->data['child'][$namespace][$tag];
}
else
{
return null;
}
}
/**
* Get the base URL value from the parent feed
*
* Uses `<xml:base>`
*
* @param array $element
* @return string
*/
public function get_base($element = array())
{
return $this->feed->get_base($element);
}
/**
* Sanitize feed data
*
* @access private
* @see SimplePie::sanitize()
* @param string $data Data to sanitize
* @param int $type One of the SIMPLEPIE_CONSTRUCT_* constants
* @param string $base Base URL to resolve URLs against
* @return string Sanitized data
*/
public function sanitize($data, $type, $base = '')
{
return $this->feed->sanitize($data, $type, $base);
}
/**
* Get the parent feed
*
* Note: this may not work as you think for multifeeds!
*
* @link http://simplepie.org/faq/typical_multifeed_gotchas#missing_data_from_feed
* @since 1.0
* @return SimplePie
*/
public function get_feed()
{
return $this->feed;
}
/**
* Get the unique identifier for the item
*
* This is usually used when writing code to check for new items in a feed.
*
* Uses `<atom:id>`, `<guid>`, `<dc:identifier>` or the `about` attribute
* for RDF. If none of these are supplied (or `$hash` is true), creates an
* MD5 hash based on the permalink, title and content.
*
* @since Beta 2
* @param boolean $hash Should we force using a hash instead of the supplied ID?
* @param string|false $fn User-supplied function to generate an hash
* @return string|null
*/
public function get_id($hash = false, $fn = 'md5')
{
if (!$hash)
{
if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'id'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'id'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'guid'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'identifier'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'identifier'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif (isset($this->data['attribs'][SIMPLEPIE_NAMESPACE_RDF]['about']))
{
return $this->sanitize($this->data['attribs'][SIMPLEPIE_NAMESPACE_RDF]['about'], SIMPLEPIE_CONSTRUCT_TEXT);
}
}
if ($fn === false)
{
return null;
}
elseif (!is_callable($fn))
{
trigger_error('User-supplied function $fn must be callable', E_USER_WARNING);
$fn = 'md5';
}
return call_user_func($fn,
$this->get_permalink().$this->get_title().$this->get_content());
}
/**
* Get the title of the item
*
* Uses `<atom:title>`, `<title>` or `<dc:title>`
*
* @since Beta 2 (previously called `get_item_title` since 0.8)
* @return string|null
*/
public function get_title()
{
if (!isset($this->data['title']))
{
if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'title'))
{
$this->data['title'] = $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_10_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'title'))
{
$this->data['title'] = $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_03_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'title'))
{
$this->data['title'] = $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'title'))
{
$this->data['title'] = $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'title'))
{
$this->data['title'] = $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'title'))
{
$this->data['title'] = $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'title'))
{
$this->data['title'] = $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
else
{
$this->data['title'] = null;
}
}
return $this->data['title'];
}
/**
* Get the content for the item
*
* Prefers summaries over full content , but will return full content if a
* summary does not exist.
*
* To prefer full content instead, use {@see get_content}
*
* Uses `<atom:summary>`, `<description>`, `<dc:description>` or
* `<itunes:subtitle>`
*
* @since 0.8
* @param boolean $description_only Should we avoid falling back to the content?
* @return string|null
*/
public function get_description($description_only = false)
{
if (($tags = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'summary')) &&
($return = $this->sanitize($tags[0]['data'], $this->registry->call('Misc', 'atom_10_construct_type', array($tags[0]['attribs'])), $this->get_base($tags[0]))))
{
return $return;
}
elseif (($tags = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'summary')) &&
($return = $this->sanitize($tags[0]['data'], $this->registry->call('Misc', 'atom_03_construct_type', array($tags[0]['attribs'])), $this->get_base($tags[0]))))
{
return $return;
}
elseif (($tags = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'description')) &&
($return = $this->sanitize($tags[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($tags[0]))))
{
return $return;
}
elseif (($tags = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'description')) &&
($return = $this->sanitize($tags[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($tags[0]))))
{
return $return;
}
elseif (($tags = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'description')) &&
($return = $this->sanitize($tags[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT)))
{
return $return;
}
elseif (($tags = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'description')) &&
($return = $this->sanitize($tags[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT)))
{
return $return;
}
elseif (($tags = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'summary')) &&
($return = $this->sanitize($tags[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($tags[0]))))
{
return $return;
}
elseif (($tags = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'subtitle')) &&
($return = $this->sanitize($tags[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT)))
{
return $return;
}
elseif (($tags = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'description')) &&
($return = $this->sanitize($tags[0]['data'], SIMPLEPIE_CONSTRUCT_HTML)))
{
return $return;
}
elseif (!$description_only)
{
return $this->get_content(true);
}
else
{
return null;
}
}
/**
* Get the content for the item
*
* Prefers full content over summaries, but will return a summary if full
* content does not exist.
*
* To prefer summaries instead, use {@see get_description}
*
* Uses `<atom:content>` or `<content:encoded>` (RSS 1.0 Content Module)
*
* @since 1.0
* @param boolean $content_only Should we avoid falling back to the description?
* @return string|null
*/
public function get_content($content_only = false)
{
if (($tags = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'content')) &&
($return = $this->sanitize($tags[0]['data'], $this->registry->call('Misc', 'atom_10_content_construct_type', array($tags[0]['attribs'])), $this->get_base($tags[0]))))
{
return $return;
}
elseif (($tags = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'content')) &&
($return = $this->sanitize($tags[0]['data'], $this->registry->call('Misc', 'atom_03_construct_type', array($tags[0]['attribs'])), $this->get_base($tags[0]))))
{
return $return;
}
elseif (($tags = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_10_MODULES_CONTENT, 'encoded')) &&
($return = $this->sanitize($tags[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($tags[0]))))
{
return $return;
}
elseif (!$content_only)
{
return $this->get_description(true);
}
else
{
return null;
}
}
/**
* Get the media:thumbnail of the item
*
* Uses `<media:thumbnail>`
*
*
* @return array|null
*/
public function get_thumbnail()
{
if (!isset($this->data['thumbnail']))
{
if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'thumbnail'))
{
$this->data['thumbnail'] = $return[0]['attribs'][''];
}
else
{
$this->data['thumbnail'] = null;
}
}
return $this->data['thumbnail'];
}
/**
* Get a category for the item
*
* @since Beta 3 (previously called `get_categories()` since Beta 2)
* @param int $key The category that you want to return. Remember that arrays begin with 0, not 1
* @return SimplePie_Category|null
*/
public function get_category($key = 0)
{
$categories = $this->get_categories();
if (isset($categories[$key]))
{
return $categories[$key];
}
else
{
return null;
}
}
/**
* Get all categories for the item
*
* Uses `<atom:category>`, `<category>` or `<dc:subject>`
*
* @since Beta 3
* @return SimplePie_Category[]|null List of {@see SimplePie_Category} objects
*/
public function get_categories()
{
$categories = array();
$type = 'category';
foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, $type) as $category)
{
$term = null;
$scheme = null;
$label = null;
if (isset($category['attribs']['']['term']))
{
$term = $this->sanitize($category['attribs']['']['term'], SIMPLEPIE_CONSTRUCT_HTML);
}
if (isset($category['attribs']['']['scheme']))
{
$scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_HTML);
}
if (isset($category['attribs']['']['label']))
{
$label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_HTML);
}
$categories[] = $this->registry->create('Category', array($term, $scheme, $label, $type));
}
foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, $type) as $category)
{
// This is really the label, but keep this as the term also for BC.
// Label will also work on retrieving because that falls back to term.
$term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_HTML);
if (isset($category['attribs']['']['domain']))
{
$scheme = $this->sanitize($category['attribs']['']['domain'], SIMPLEPIE_CONSTRUCT_HTML);
}
else
{
$scheme = null;
}
$categories[] = $this->registry->create('Category', array($term, $scheme, null, $type));
}
$type = 'subject';
foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, $type) as $category)
{
$categories[] = $this->registry->create('Category', array($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_HTML), null, null, $type));
}
foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, $type) as $category)
{
$categories[] = $this->registry->create('Category', array($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_HTML), null, null, $type));
}
if (!empty($categories))
{
return array_unique($categories);
}
else
{
return null;
}
}
/**
* Get an author for the item
*
* @since Beta 2
* @param int $key The author that you want to return. Remember that arrays begin with 0, not 1
* @return SimplePie_Author|null
*/
public function get_author($key = 0)
{
$authors = $this->get_authors();
if (isset($authors[$key]))
{
return $authors[$key];
}
else
{
return null;
}
}
/**
* Get a contributor for the item
*
* @since 1.1
* @param int $key The contrbutor that you want to return. Remember that arrays begin with 0, not 1
* @return SimplePie_Author|null
*/
public function get_contributor($key = 0)
{
$contributors = $this->get_contributors();
if (isset($contributors[$key]))
{
return $contributors[$key];
}
else
{
return null;
}
}
/**
* Get all contributors for the item
*
* Uses `<atom:contributor>`
*
* @since 1.1
* @return array|null List of {@see SimplePie_Author} objects
*/
public function get_contributors()
{
$contributors = array();
foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'contributor') as $contributor)
{
$name = null;
$uri = null;
$email = null;
if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
{
$name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
{
$uri = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
}
if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
{
$email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
if ($name !== null || $email !== null || $uri !== null)
{
$contributors[] = $this->registry->create('Author', array($name, $uri, $email));
}
}
foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'contributor') as $contributor)
{
$name = null;
$url = null;
$email = null;
if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
{
$name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
{
$url = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
}
if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
{
$email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
if ($name !== null || $email !== null || $url !== null)
{
$contributors[] = $this->registry->create('Author', array($name, $url, $email));
}
}
if (!empty($contributors))
{
return array_unique($contributors);
}
else
{
return null;
}
}
/**
* Get all authors for the item
*
* Uses `<atom:author>`, `<author>`, `<dc:creator>` or `<itunes:author>`
*
* @since Beta 2
* @return array|null List of {@see SimplePie_Author} objects
*/
public function get_authors()
{
$authors = array();
foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'author') as $author)
{
$name = null;
$uri = null;
$email = null;
if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
{
$name = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_HTML);
}
if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
{
$uri = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
}
if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
{
$email = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_HTML);
}
if ($name !== null || $email !== null || $uri !== null)
{
$authors[] = $this->registry->create('Author', array($name, $uri, $email));
}
}
if ($author = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'author'))
{
$name = null;
$url = null;
$email = null;
if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
{
$name = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_HTML);
}
if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
{
$url = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
}
if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
{
$email = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_HTML);
}
if ($name !== null || $email !== null || $url !== null)
{
$authors[] = $this->registry->create('Author', array($name, $url, $email));
}
}
if ($author = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'author'))
{
$authors[] = $this->registry->create('Author', array(null, null, $this->sanitize($author[0]['data'], SIMPLEPIE_CONSTRUCT_HTML)));
}
foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'creator') as $author)
{
$authors[] = $this->registry->create('Author', array($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_HTML), null, null));
}
foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'creator') as $author)
{
$authors[] = $this->registry->create('Author', array($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_HTML), null, null));
}
foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'author') as $author)
{
$authors[] = $this->registry->create('Author', array($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_HTML), null, null));
}
if (!empty($authors))
{
return array_unique($authors);
}
elseif (($source = $this->get_source()) && ($authors = $source->get_authors()))
{
return $authors;
}
elseif ($authors = $this->feed->get_authors())
{
return $authors;
}
else
{
return null;
}
}
/**
* Get the copyright info for the item
*
* Uses `<atom:rights>` or `<dc:rights>`
*
* @since 1.1
* @return string
*/
public function get_copyright()
{
if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'rights'))
{
return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_10_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'rights'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'rights'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
else
{
return null;
}
}
/**
* Get the posting date/time for the item
*
* Uses `<atom:published>`, `<atom:updated>`, `<atom:issued>`,
* `<atom:modified>`, `<pubDate>` or `<dc:date>`
*
* Note: obeys PHP's timezone setting. To get a UTC date/time, use
* {@see get_gmdate}
*
* @since Beta 2 (previously called `get_item_date` since 0.8)
*
* @param string $date_format Supports any PHP date format from {@see http://php.net/date} (empty for the raw data)
* @return int|string|null
*/
public function get_date($date_format = 'j F Y, g:i a')
{
if (!isset($this->data['date']))
{
if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'published'))
{
$this->data['date']['raw'] = $return[0]['data'];
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'pubDate'))
{
$this->data['date']['raw'] = $return[0]['data'];
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'date'))
{
$this->data['date']['raw'] = $return[0]['data'];
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'date'))
{
$this->data['date']['raw'] = $return[0]['data'];
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'updated'))
{
$this->data['date']['raw'] = $return[0]['data'];
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'issued'))
{
$this->data['date']['raw'] = $return[0]['data'];
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'created'))
{
$this->data['date']['raw'] = $return[0]['data'];
}
elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'modified'))
{
$this->data['date']['raw'] = $return[0]['data'];
}
if (!empty($this->data['date']['raw']))
{
$parser = $this->registry->call('Parse_Date', 'get');
$this->data['date']['parsed'] = $parser->parse($this->data['date']['raw']);
}
else
{
$this->data['date'] = null;
}
}
if ($this->data['date'])
{
$date_format = (string) $date_format;
switch ($date_format)
{
case '':
return $this->sanitize($this->data['date']['raw'], SIMPLEPIE_CONSTRUCT_TEXT);
case 'U':
return $this->data['date']['parsed'];
default:
return date($date_format, $this->data['date']['parsed']);
}
}
else
{
return null;
}
}
/**
* Get the update date/time for the item
*
* Uses `<atom:updated>`
*
* Note: obeys PHP's timezone setting. To get a UTC date/time, use
* {@see get_gmdate}
*
* @param string $date_format Supports any PHP date format from {@see http://php.net/date} (empty for the raw data)
* @return int|string|null
*/
public function get_updated_date($date_format = 'j F Y, g:i a')
{
if (!isset($this->data['updated']))
{
if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'updated'))
{
$this->data['updated']['raw'] = $return[0]['data'];
}
if (!empty($this->data['updated']['raw']))
{
$parser = $this->registry->call('Parse_Date', 'get');
$this->data['updated']['parsed'] = $parser->parse($this->data['updated']['raw']);
}
else
{
$this->data['updated'] = null;
}
}
if ($this->data['updated'])
{
$date_format = (string) $date_format;
switch ($date_format)
{
case '':
return $this->sanitize($this->data['updated']['raw'], SIMPLEPIE_CONSTRUCT_TEXT);
case 'U':
return $this->data['updated']['parsed'];
default:
return date($date_format, $this->data['updated']['parsed']);
}
}
else
{
return null;
}
}
/**
* Get the localized posting date/time for the item
*
* Returns the date formatted in the localized language. To display in
* languages other than the server's default, you need to change the locale
* with {@link http://php.net/setlocale setlocale()}. The available
* localizations depend on which ones are installed on your web server.
*
* @since 1.0
*
* @param string $date_format Supports any PHP date format from {@see http://php.net/strftime} (empty for the raw data)
* @return int|string|null
*/
public function get_local_date($date_format = '%c')
{
if (!$date_format)
{
return $this->sanitize($this->get_date(''), SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif (($date = $this->get_date('U')) !== null && $date !== false)
{
return strftime($date_format, $date);
}
else
{
return null;
}
}
/**
* Get the posting date/time for the item (UTC time)
*
* @see get_date
* @param string $date_format Supports any PHP date format from {@see http://php.net/date}
* @return int|string|null
*/
public function get_gmdate($date_format = 'j F Y, g:i a')
{
$date = $this->get_date('U');
if ($date === null)
{
return null;
}
return gmdate($date_format, $date);
}
/**
* Get the update date/time for the item (UTC time)
*
* @see get_updated_date
* @param string $date_format Supports any PHP date format from {@see http://php.net/date}
* @return int|string|null
*/
public function get_updated_gmdate($date_format = 'j F Y, g:i a')
{
$date = $this->get_updated_date('U');
if ($date === null)
{
return null;
}
return gmdate($date_format, $date);
}
/**
* Get the permalink for the item
*
* Returns the first link available with a relationship of "alternate".
* Identical to {@see get_link()} with key 0
*
* @see get_link
* @since 0.8
* @return string|null Permalink URL
*/
public function get_permalink()
{
$link = $this->get_link();
$enclosure = $this->get_enclosure(0);
if ($link !== null)
{
return $link;
}
elseif ($enclosure !== null)
{
return $enclosure->get_link();
}
else
{
return null;
}
}
/**
* Get a single link for the item
*
* @since Beta 3
* @param int $key The link that you want to return. Remember that arrays begin with 0, not 1
* @param string $rel The relationship of the link to return
* @return string|null Link URL
*/
public function get_link($key = 0, $rel = 'alternate')
{
$links = $this->get_links($rel);
if ($links[$key] !== null)
{
return $links[$key];
}
else
{
return null;
}
}
/**
* Get all links for the item