PHP SliceParagraph函數代碼示例

 /**
  *
  *
  * @param $Sender
  * @param $Args
  * @throws Gdn_UserException
  */
 public function commentModel_afterSaveComment_handler($Sender, $Args)
 {
     if (!$this->socialSharing()) {
         return;
     }
     if (!$this->accessToken()) {
         return;
     }
     $ShareFacebook = valr('FormPostValues.ShareFacebook', $Args);
     if ($ShareFacebook) {
         $Row = $Args['FormPostValues'];
         $DiscussionModel = new DiscussionModel();
         $Discussion = $DiscussionModel->getID(val('DiscussionID', $Row));
         if (!$Discussion) {
             die('no discussion');
         }
         $Url = DiscussionUrl($Discussion, '', true);
         $Message = SliceParagraph(Gdn_Format::plainText($Row['Body'], $Row['Format']), 160);
         if ($this->accessToken()) {
             $R = $this->api('/me/feed', array('link' => $Url, 'message' => $Message));
         }
     }
 }

 /**
  * Examines the page at $Url for title, description & images. Be sure to check the resultant array for any Exceptions that occurred while retrieving the page. 
  * @param string $Url The url to examine.
  * @param integer $Timeout How long to allow for this request. Default Garden.SocketTimeout or 1, 0 to never timeout. Default is 0.
  * @return array an array containing Url, Title, Description, Images (array) and Exception (if there were problems retrieving the page).
  */
 function FetchPageInfo($Url, $Timeout = 3)
 {
     $PageInfo = array('Url' => $Url, 'Title' => '', 'Description' => '', 'Images' => array(), 'Exception' => FALSE);
     try {
         if (!defined('HDOM_TYPE_ELEMENT')) {
             require_once PATH_LIBRARY . '/vendors/simplehtmldom/simple_html_dom.php';
         }
         $PageHtml = ProxyRequest($Url, $Timeout, TRUE);
         $Dom = str_get_html($PageHtml);
         if (!$Dom) {
             throw new Exception('Failed to load page for parsing.');
         }
         /* Sample Facebook Open Graph code:
         
         <meta property="og:title" content="60 degrees in&nbsp;February" />
         <meta property="og:url" content="http://karinemily.wordpress.com/2012/02/02/60-degrees-in-february/" />
         <meta property="og:description" content="and Philadelphia explodes with babies, puppies, and hipsters." />
         <meta property="og:site_name" content="K a r i &#039; s" />
         <meta property="og:image" content="http://karinemily.files.wordpress.com/2012/02/dsc_0132.jpg?w=300&amp;h=300" />
         <meta property="og:image" content="http://karinemily.files.wordpress.com/2012/02/dsc_0214.jpg?w=300&amp;h=300" />
         <meta property="og:image" content="http://karinemily.files.wordpress.com/2012/02/dsc_0213.jpg?w=300&amp;h=300" />
         <meta property="og:image" content="http://karinemily.files.wordpress.com/2012/02/dsc_0221-version-2.jpg?w=300&amp;h=300" />
         
                   */
         // FIRST PASS: Look for open graph title, desc, images
         $PageInfo['Title'] = DomGetContent($Dom, 'meta[property=og:title]');
         Trace('Getting og:description');
         $PageInfo['Description'] = DomGetContent($Dom, 'meta[property=og:description]');
         foreach ($Dom->find('meta[property=og:image]') as $Image) {
             if (isset($Image->content)) {
                 $PageInfo['Images'][] = $Image->content;
             }
         }
         // SECOND PASS: Look in the page for title, desc, images
         if ($PageInfo['Title'] == '') {
             $PageInfo['Title'] = $Dom->find('title', 0)->plaintext;
         }
         if ($PageInfo['Description'] == '') {
             Trace('Getting meta description');
             $PageInfo['Description'] = DomGetContent($Dom, 'meta[name=description]');
         }
         // THIRD PASS: Look in the page contents
         if ($PageInfo['Description'] == '') {
             foreach ($Dom->find('p') as $element) {
                 Trace('Looking at p for description.');
                 if (strlen($element->plaintext) > 150) {
                     $PageInfo['Description'] = $element->plaintext;
                     break;
                 }
             }
             if (strlen($PageInfo['Description']) > 400) {
                 $PageInfo['Description'] = SliceParagraph($PageInfo['Description'], 400);
             }
         }
         // Final: Still nothing? remove limitations
         if ($PageInfo['Description'] == '') {
             foreach ($Dom->find('p') as $element) {
                 Trace('Looking at p for description (no restrictions)');
                 if (trim($element->plaintext) != '') {
                     $PageInfo['Description'] = $element->plaintext;
                     break;
                 }
             }
         }
         // Page Images
         if (count($PageInfo['Images']) == 0) {
             $Images = DomGetImages($Dom, $Url);
             $PageInfo['Images'] = array_values($Images);
         }
         $PageInfo['Title'] = HtmlEntityDecode($PageInfo['Title']);
         $PageInfo['Description'] = HtmlEntityDecode($PageInfo['Description']);
     } catch (Exception $ex) {
         $PageInfo['Exception'] = $ex->getMessage();
     }
     return $PageInfo;
 }

 /**
  *
  *
  * @param PostController $Sender
  * @param type $RecordType
  * @param type $ID
  * @throws type
  */
 public function postController_twitter_create($Sender, $RecordType, $ID)
 {
     if (!$this->socialReactions()) {
         throw permissionException();
     }
     //      if (!Gdn::request()->isPostBack())
     //         throw permissionException('Javascript');
     $Row = GetRecord($RecordType, $ID, true);
     if ($Row) {
         // Grab the tweet message.
         switch (strtolower($RecordType)) {
             case 'discussion':
                 $Message = Gdn_Format::plainText($Row['Name'], 'Text');
                 break;
             case 'comment':
             default:
                 $Message = Gdn_Format::plainText($Row['Body'], $Row['Format']);
         }
         $Elips = '...';
         $Message = preg_replace('`\\s+`', ' ', $Message);
         //         if (function_exists('normalizer_is_normalized')) {
         //            // Slice the string to 119 characters (21 reservered for the url.
         //            if (!normalizer_is_normalized($Message))
         //               $Message = Normalizer::normalize($Message, Normalizer::FORM_D);
         //            $Elips = Normalizer::normalize($Elips, Normalizer::FORM_D);
         //         }
         $Max = 140;
         $LinkLen = 22;
         $Max -= $LinkLen;
         $Message = SliceParagraph($Message, $Max);
         if (strlen($Message) > $Max) {
             $Message = substr($Message, 0, $Max - strlen($Elips)) . $Elips;
         }
         //         echo $Message.strlen($Message);
         if ($this->accessToken()) {
             Gdn::controller()->setData('Message', $Message);
             $Message .= ' ' . $Row['ShareUrl'];
             $R = $this->api('/statuses/update.json', array('status' => $Message), 'POST');
             $Sender->setJson('R', $R);
             $Sender->informMessage(t('Thanks for sharing!'));
         } else {
             $Get = array('text' => $Message, 'url' => $Row['ShareUrl']);
             $Url = "https://twitter.com/share?" . http_build_query($Get);
             redirect($Url);
         }
     }
     $Sender->render('Blank', 'Utility', 'Dashboard');
 }

 /**
  * Examine a page at {@link $Url} for title, description & images.
  *
  * Be sure to check the resultant array for any Exceptions that occurred while retrieving the page.
  *
  * @param string $url The url to examine.
  * @param integer $timeout How long to allow for this request.
  * Default Garden.SocketTimeout or 1, 0 to never timeout. Default is 0.
  * @param bool $sendCookies Whether or not to send browser cookies with the request.
  * @return array Returns an array containing Url, Title, Description, Images (array) and Exception
  * (if there were problems retrieving the page).
  */
 function fetchPageInfo($url, $timeout = 3, $sendCookies = false)
 {
     $PageInfo = array('Url' => $url, 'Title' => '', 'Description' => '', 'Images' => array(), 'Exception' => false);
     try {
         // Make sure the URL is valid.
         $urlParts = parse_url($url);
         if ($urlParts === false || !in_array(val('scheme', $urlParts), array('http', 'https'))) {
             throw new Exception('Invalid URL.', 400);
         }
         if (!defined('HDOM_TYPE_ELEMENT')) {
             require_once PATH_LIBRARY . '/vendors/simplehtmldom/simple_html_dom.php';
         }
         $Request = new ProxyRequest();
         $PageHtml = $Request->Request(array('URL' => $url, 'Timeout' => $timeout, 'Cookies' => $sendCookies));
         if (!$Request->status()) {
             throw new Exception('Couldn\'t connect to host.', 400);
         }
         $Dom = str_get_html($PageHtml);
         if (!$Dom) {
             throw new Exception('Failed to load page for parsing.');
         }
         // FIRST PASS: Look for open graph title, desc, images
         $PageInfo['Title'] = domGetContent($Dom, 'meta[property=og:title]');
         Trace('Getting og:description');
         $PageInfo['Description'] = domGetContent($Dom, 'meta[property=og:description]');
         foreach ($Dom->find('meta[property=og:image]') as $Image) {
             if (isset($Image->content)) {
                 $PageInfo['Images'][] = $Image->content;
             }
         }
         // SECOND PASS: Look in the page for title, desc, images
         if ($PageInfo['Title'] == '') {
             $PageInfo['Title'] = $Dom->find('title', 0)->plaintext;
         }
         if ($PageInfo['Description'] == '') {
             Trace('Getting meta description');
             $PageInfo['Description'] = domGetContent($Dom, 'meta[name=description]');
         }
         // THIRD PASS: Look in the page contents
         if ($PageInfo['Description'] == '') {
             foreach ($Dom->find('p') as $element) {
                 Trace('Looking at p for description.');
                 if (strlen($element->plaintext) > 150) {
                     $PageInfo['Description'] = $element->plaintext;
                     break;
                 }
             }
             if (strlen($PageInfo['Description']) > 400) {
                 $PageInfo['Description'] = SliceParagraph($PageInfo['Description'], 400);
             }
         }
         // Final: Still nothing? remove limitations
         if ($PageInfo['Description'] == '') {
             foreach ($Dom->find('p') as $element) {
                 Trace('Looking at p for description (no restrictions)');
                 if (trim($element->plaintext) != '') {
                     $PageInfo['Description'] = $element->plaintext;
                     break;
                 }
             }
         }
         // Page Images
         if (count($PageInfo['Images']) == 0) {
             $Images = domGetImages($Dom, $url);
             $PageInfo['Images'] = array_values($Images);
         }
         $PageInfo['Title'] = htmlEntityDecode($PageInfo['Title']);
         $PageInfo['Description'] = htmlEntityDecode($PageInfo['Description']);
     } catch (Exception $ex) {
         $PageInfo['Exception'] = $ex->getMessage();
     }
     return $PageInfo;
 }

 /**
  * Default single discussion display.
  *
  * @since 2.0.0
  * @access public
  *
  * @param int $DiscussionID Unique discussion ID
  * @param string $DiscussionStub URL-safe title slug
  * @param int $Page The current page of comments
  */
 public function Index($DiscussionID = '', $DiscussionStub = '', $Page = '')
 {
     // Setup head
     $Session = Gdn::Session();
     $this->AddJsFile('jquery.autogrow.js');
     $this->AddJsFile('discussion.js');
     $this->AddJsFile('autosave.js');
     Gdn_Theme::Section('Discussion');
     // Load the discussion record
     $DiscussionID = is_numeric($DiscussionID) && $DiscussionID > 0 ? $DiscussionID : 0;
     if (!array_key_exists('Discussion', $this->Data)) {
         $this->SetData('Discussion', $this->DiscussionModel->GetID($DiscussionID), TRUE);
     }
     if (!is_object($this->Discussion)) {
         throw new Exception(sprintf(T('%s Not Found'), T('Discussion')), 404);
     }
     // Define the query offset & limit.
     $Limit = C('Vanilla.Comments.PerPage', 30);
     $OffsetProvided = $Page != '';
     list($Offset, $Limit) = OffsetLimit($Page, $Limit);
     // Check permissions
     $this->Permission('Vanilla.Discussions.View', TRUE, 'Category', $this->Discussion->PermissionCategoryID);
     $this->SetData('CategoryID', $this->CategoryID = $this->Discussion->CategoryID, TRUE);
     $this->SetData('Breadcrumbs', CategoryModel::GetAncestors($this->CategoryID));
     $Category = CategoryModel::Categories($this->Discussion->CategoryID);
     if ($CategoryCssClass = GetValue('CssClass', $Category)) {
         Gdn_Theme::Section($CategoryCssClass);
     }
     // Setup
     $this->Title($this->Discussion->Name);
     // Actual number of comments, excluding the discussion itself.
     $ActualResponses = $this->Discussion->CountComments;
     $this->Offset = $Offset;
     if (C('Vanilla.Comments.AutoOffset')) {
         //         if ($this->Discussion->CountCommentWatch > 1 && $OffsetProvided == '')
         //            $this->AddDefinition('ScrollTo', 'a[name=Item_'.$this->Discussion->CountCommentWatch.']');
         if (!is_numeric($this->Offset) || $this->Offset < 0 || !$OffsetProvided) {
             // Round down to the appropriate offset based on the user's read comments & comments per page
             $CountCommentWatch = $this->Discussion->CountCommentWatch > 0 ? $this->Discussion->CountCommentWatch : 0;
             if ($CountCommentWatch > $ActualResponses) {
                 $CountCommentWatch = $ActualResponses;
             }
             // (((67 comments / 10 perpage) = 6.7) rounded down = 6) * 10 perpage = offset 60;
             $this->Offset = floor($CountCommentWatch / $Limit) * $Limit;
         }
         if ($ActualResponses <= $Limit) {
             $this->Offset = 0;
         }
         if ($this->Offset == $ActualResponses) {
             $this->Offset -= $Limit;
         }
     } else {
         if ($this->Offset == '') {
             $this->Offset = 0;
         }
     }
     if ($this->Offset < 0) {
         $this->Offset = 0;
     }
     $LatestItem = $this->Discussion->CountCommentWatch;
     if ($LatestItem === NULL) {
         $LatestItem = 0;
     } elseif ($LatestItem < $this->Discussion->CountComments) {
         $LatestItem += 1;
     }
     $this->SetData('_LatestItem', $LatestItem);
     // Set the canonical url to have the proper page title.
     $this->CanonicalUrl(DiscussionUrl($this->Discussion, PageNumber($this->Offset, $Limit, 0, FALSE)));
     //      Url(ConcatSep('/', 'discussion/'.$this->Discussion->DiscussionID.'/'. Gdn_Format::Url($this->Discussion->Name), PageNumber($this->Offset, $Limit, TRUE, Gdn::Session()->UserID != 0)), TRUE), Gdn::Session()->UserID == 0);
     // Load the comments
     $this->SetData('Comments', $this->CommentModel->Get($DiscussionID, $Limit, $this->Offset));
     $PageNumber = PageNumber($this->Offset, $Limit);
     $this->SetData('Page', $PageNumber);
     $this->_SetOpenGraph();
     include_once PATH_LIBRARY . '/vendors/simplehtmldom/simple_html_dom.php';
     if ($PageNumber == 1) {
         $this->Description(SliceParagraph(Gdn_Format::PlainText($this->Discussion->Body, $this->Discussion->Format), 160));
         // Add images to head for open graph
         $Dom = str_get_html(Gdn_Format::To($this->Discussion->Body, $this->Discussion->Format));
     } else {
         $this->Data['Title'] .= sprintf(T(' - Page %s'), PageNumber($this->Offset, $Limit));
         $FirstComment = $this->Data('Comments')->FirstRow();
         $FirstBody = GetValue('Body', $FirstComment);
         $FirstFormat = GetValue('Format', $FirstComment);
         $this->Description(SliceParagraph(Gdn_Format::PlainText($FirstBody, $FirstFormat), 160));
         // Add images to head for open graph
         $Dom = str_get_html(Gdn_Format::To($FirstBody, $FirstFormat));
     }
     if ($Dom) {
         foreach ($Dom->find('img') as $img) {
//.........這裏部分代碼省略.........

 /**
  *
  *
  * @param PostController $Sender
  * @param type $RecordType
  * @param type $ID
  * @throws type
  */
 public function postController_googlePlus_create($Sender, $RecordType, $ID)
 {
     $Row = GetRecord($RecordType, $ID);
     if ($Row) {
         $Message = SliceParagraph(Gdn_Format::plainText($Row['Body'], $Row['Format']), 160);
         $Get = array('url' => $Row['ShareUrl']);
         $Url = 'https://plus.google.com/share?' . http_build_query($Get);
         redirect($Url);
     }
     $Sender->render('Blank', 'Utility', 'Dashboard');
 }

 /**
  * 
  * @param PostController $Sender
  * @param type $RecordType
  * @param type $ID
  * @throws type
  */
 public function PostController_Facebook_Create($Sender, $RecordType, $ID)
 {
     if (!$this->SocialReactions()) {
         throw PermissionException();
     }
     //      if (!Gdn::Request()->IsPostBack())
     //         throw PermissionException('Javascript');
     $Row = GetRecord($RecordType, $ID);
     if ($Row) {
         $Message = SliceParagraph(Gdn_Format::PlainText($Row['Body'], $Row['Format']), 160);
         if ($this->AccessToken() && $Sender->Request->IsPostBack()) {
             $R = $this->API('/me/feed', array('link' => $Row['ShareUrl'], 'message' => $Message));
             $Sender->SetJson('R', $R);
             $Sender->InformMessage(T('Thanks for sharing!'));
         } else {
             //            http://www.facebook.com/dialog/feed?app_id=231546166870342&redirect_uri=http%3A%2F%2Fvanillicon.com%2Fredirect%2Ffacebook%3Fhash%3Daad66afb13105676dffa79bfe2b8595f&link=http%3A%2F%2Fvanillicon.com&picture=http%3A%2F%2Fvanillicon.com%2Faad66afb13105676dffa79bfe2b8595f.png&name=Vanillicon&caption=What%27s+Your+Vanillicon+Look+Like%3F&description=Vanillicons+are+unique+avatars+generated+by+your+name+or+email+that+are+free+to+make+%26+use+around+the+web.+Create+yours+now%21
             $Get = array('app_id' => C('Plugins.Facebook.ApplicationID'), 'link' => $Row['ShareUrl'], 'name' => Gdn_Format::PlainText($Row['Name'], 'Text'), 'description' => $Message, 'redirect_uri' => Url('/post/shared/facebook', TRUE));
             $Url = 'http://www.facebook.com/dialog/feed?' . http_build_query($Get);
             Redirect($Url);
         }
     }
     $Sender->Render('Blank', 'Utility', 'Dashboard');
 }

 /**
  * Examine a page at {@link $Url} for title, description & images.
  *
  * Be sure to check the resultant array for any Exceptions that occurred while retrieving the page.
  *
  * @param string $url The url to examine.
  * @param integer $timeout How long to allow for this request.
  * Default Garden.SocketTimeout or 1, 0 to never timeout. Default is 0.
  * @param bool $sendCookies Whether or not to send browser cookies with the request.
  * @return array Returns an array containing Url, Title, Description, Images (array) and Exception
  * (if there were problems retrieving the page).
  */
 function fetchPageInfo($url, $timeout = 3, $sendCookies = false)
 {
     $PageInfo = array('Url' => $url, 'Title' => '', 'Description' => '', 'Images' => array(), 'Exception' => false);
     try {
         // Make sure the URL is valid.
         $urlParts = parse_url($url);
         if ($urlParts === false || !in_array(val('scheme', $urlParts), array('http', 'https'))) {
             throw new Exception('Invalid URL.', 400);
         }
         $Request = new ProxyRequest();
         $PageHtml = $Request->Request(array('URL' => $url, 'Timeout' => $timeout, 'Cookies' => $sendCookies, 'Redirects' => true));
         if (!$Request->status()) {
             throw new Exception('Couldn\'t connect to host.', 400);
         }
         $Dom = pQuery::parseStr($PageHtml);
         if (!$Dom) {
             throw new Exception('Failed to load page for parsing.');
         }
         // FIRST PASS: Look for open graph title, desc, images
         $PageInfo['Title'] = domGetContent($Dom, 'meta[property="og:title"]');
         Trace('Getting og:description');
         $PageInfo['Description'] = domGetContent($Dom, 'meta[property="og:description"]');
         foreach ($Dom->query('meta[property="og:image"]') as $Image) {
             if ($Image->attr('content')) {
                 $PageInfo['Images'][] = $Image->attr('content');
             }
         }
         // SECOND PASS: Look in the page for title, desc, images
         if ($PageInfo['Title'] == '') {
             $PageInfo['Title'] = $Dom->query('title')->text();
         }
         if ($PageInfo['Description'] == '') {
             Trace('Getting meta description');
             $PageInfo['Description'] = domGetContent($Dom, 'meta[name="description"]');
         }
         // THIRD PASS: Look in the page contents
         if ($PageInfo['Description'] == '') {
             foreach ($Dom->query('p') as $element) {
                 Trace('Looking at p for description.');
                 if (strlen($element->plaintext) > 150) {
                     $PageInfo['Description'] = $element->text();
                     break;
                 }
             }
             if (strlen($PageInfo['Description']) > 400) {
                 $PageInfo['Description'] = SliceParagraph($PageInfo['Description'], 400);
             }
         }
         // Final: Still nothing? remove limitations
         if ($PageInfo['Description'] == '') {
             foreach ($Dom->query('p') as $element) {
                 Trace('Looking at p for description (no restrictions)');
                 if (trim($element->text()) != '') {
                     $PageInfo['Description'] = $element->text();
                     break;
                 }
             }
         }
         // Page Images
         if (count($PageInfo['Images']) == 0) {
             $Images = domGetImages($Dom, $url);
             $PageInfo['Images'] = array_values($Images);
         }
         $PageInfo['Title'] = htmlEntityDecode($PageInfo['Title']);
         $PageInfo['Description'] = htmlEntityDecode($PageInfo['Description']);
     } catch (Exception $ex) {
         $PageInfo['Exception'] = $ex->getMessage();
     }
     return $PageInfo;
 }

 /**
  * Loads default page view.
  *
  * @param string $PageUrlCode ; Unique page URL stub identifier.
  */
 public function Index($PageUrlCode = '')
 {
     $this->Page = $this->PageModel->GetByUrlCode($PageUrlCode);
     // Require the custom view permission if it exists.
     // Otherwise, the page is public by default.
     $ViewPermissionName = 'BasicPages.' . $PageUrlCode . '.View';
     if (array_key_exists($ViewPermissionName, Gdn::PermissionModel()->PermissionColumns())) {
         $this->Permission($ViewPermissionName);
     }
     // If page doesn't exist.
     if ($this->Page == null) {
         throw new Exception(sprintf(T('%s Not Found'), T('Page')), 404);
         return null;
     }
     $this->SetData('Page', $this->Page, false);
     // Add body CSS class.
     $this->CssClass = 'Page-' . $this->Page->UrlCode;
     if (IsMobile()) {
         $this->CssClass .= ' PageMobile';
     }
     // Set the canonical URL to have the proper page link.
     $this->CanonicalUrl(PageModel::PageUrl($this->Page));
     // Add modules
     $this->AddModule('GuestModule');
     $this->AddModule('SignedInModule');
     // Add CSS files
     $this->AddCssFile('page.css');
     $this->AddModule('NewDiscussionModule');
     $this->AddModule('DiscussionFilterModule');
     $this->AddModule('BookmarkedModule');
     $this->AddModule('DiscussionsModule');
     $this->AddModule('RecentActivityModule');
     // Setup head.
     if (!$this->Data('Title')) {
         $Title = C('Garden.HomepageTitle');
         $DefaultControllerDestination = Gdn::Router()->GetDestination('DefaultController');
         if ($Title != '' && strpos($DefaultControllerDestination, 'page/' . $this->Page->UrlCode) !== false) {
             // If the page is set as DefaultController.
             $this->Title($Title, '');
             // Add description meta tag.
             $this->Description(C('Garden.Description', null));
         } else {
             // If the page is NOT the DefaultController.
             $this->Title($this->Page->Name);
             // Add description meta tag.
             $this->Description(SliceParagraph(Gdn_Format::PlainText($this->Page->Body, $this->Page->Format), 160));
         }
     }
     $this->Render();
 }