PHP TimberHelper::trim_words方法代码示例

 /**
  *  ## get a preview of your post, if you have an excerpt it will use that,
  *  ## otherwise it will pull from the post_content
  *  <p>{{post.get_preview(50)}}</p>
  */
 function get_preview($len = 50, $force = false, $readmore = 'Read More', $strip = true)
 {
     $text = '';
     $trimmed = false;
     if (isset($this->post_excerpt) && strlen($this->post_excerpt)) {
         if ($force) {
             $text = TimberHelper::trim_words($this->post_excerpt, $len, false);
             $trimmed = true;
         } else {
             $text = $this->post_excerpt;
         }
     }
     if (!strlen($text)) {
         $text = TimberHelper::trim_words($this->get_content(), $len, false);
         $trimmed = true;
     }
     if (!strlen(trim($text))) {
         return $text;
     }
     if ($strip) {
         $text = trim(strip_tags($text));
     }
     if (strlen($text)) {
         $text = trim($text);
         $last = $text[strlen($text) - 1];
         if ($last != '.' && $trimmed) {
             $text .= ' &hellip; ';
         }
         if (!$strip) {
             $last_p_tag = strrpos($text, '</p>');
             if ($last_p_tag !== false) {
                 $text = substr($text, 0, $last_p_tag);
             }
             if ($last != '.' && $trimmed) {
                 $text .= ' &hellip; ';
             }
         }
         if ($readmore) {
             $text .= ' <a href="' . $this->get_permalink() . '" class="read-more">' . $readmore . '</a>';
         }
         if (!$strip) {
             $text .= '</p>';
         }
     }
     return $text;
 }

 /**
  *
  *
  * @param Twig_Environment $twig
  * @return Twig_Environment
  */
 function add_timber_filters($twig)
 {
     /* image filters */
     $twig->addFilter(new Twig_SimpleFilter('resize', array('TimberImageHelper', 'resize')));
     $twig->addFilter(new Twig_SimpleFilter('retina', array('TimberImageHelper', 'retina_resize')));
     $twig->addFilter(new Twig_SimpleFilter('letterbox', array('TimberImageHelper', 'letterbox')));
     $twig->addFilter(new Twig_SimpleFilter('tojpg', array('TimberImageHelper', 'img_to_jpg')));
     /* debugging filters */
     $twig->addFilter(new Twig_SimpleFilter('docs', 'twig_object_docs'));
     $twig->addFilter(new Twig_SimpleFilter('get_class', 'get_class'));
     $twig->addFilter(new Twig_SimpleFilter('get_type', 'get_type'));
     $twig->addFilter(new Twig_SimpleFilter('print_r', function ($arr) {
         return print_r($arr, true);
     }));
     $twig->addFilter(new Twig_SimpleFilter('print_a', function ($arr) {
         return '<pre>' . self::object_docs($arr, true) . '</pre>';
     }));
     /* other filters */
     $twig->addFilter(new Twig_SimpleFilter('stripshortcodes', 'strip_shortcodes'));
     $twig->addFilter(new Twig_SimpleFilter('array', array($this, 'to_array')));
     $twig->addFilter(new Twig_SimpleFilter('excerpt', 'wp_trim_words'));
     $twig->addFilter(new Twig_SimpleFilter('function', array($this, 'exec_function')));
     $twig->addFilter(new Twig_SimpleFilter('pretags', array($this, 'twig_pretags')));
     $twig->addFilter(new Twig_SimpleFilter('sanitize', 'sanitize_title'));
     $twig->addFilter(new Twig_SimpleFilter('shortcodes', 'do_shortcode'));
     $twig->addFilter(new Twig_SimpleFilter('time_ago', array($this, 'time_ago')));
     $twig->addFilter(new Twig_SimpleFilter('wpautop', 'wpautop'));
     $twig->addFilter(new Twig_SimpleFilter('relative', function ($link) {
         return TimberURLHelper::get_rel_url($link, true);
     }));
     $twig->addFilter(new Twig_SimpleFilter('date', array($this, 'intl_date')));
     $twig->addFilter(new Twig_SimpleFilter('truncate', function ($text, $len) {
         return TimberHelper::trim_words($text, $len);
     }));
     /* actions and filters */
     $twig->addFunction(new Twig_SimpleFunction('action', function ($context) {
         $args = func_get_args();
         array_shift($args);
         $args[] = $context;
         call_user_func_array('do_action', $args);
     }, array('needs_context' => true)));
     $twig->addFilter(new Twig_SimpleFilter('apply_filters', function () {
         $args = func_get_args();
         $tag = current(array_splice($args, 1, 1));
         return apply_filters_ref_array($tag, $args);
     }));
     $twig->addFunction(new Twig_SimpleFunction('function', array(&$this, 'exec_function')));
     $twig->addFunction(new Twig_SimpleFunction('fn', array(&$this, 'exec_function')));
     $twig->addFunction(new Twig_SimpleFunction('shortcode', 'do_shortcode'));
     /* TimberObjects */
     $twig->addFunction(new Twig_SimpleFunction('TimberPost', function ($pid, $PostClass = 'TimberPost') {
         if (is_array($pid) && !TimberHelper::is_array_assoc($pid)) {
             foreach ($pid as &$p) {
                 $p = new $PostClass($p);
             }
             return $pid;
         }
         return new $PostClass($pid);
     }));
     $twig->addFunction(new Twig_SimpleFunction('TimberImage', function ($pid, $ImageClass = 'TimberImage') {
         if (is_array($pid) && !TimberHelper::is_array_assoc($pid)) {
             foreach ($pid as &$p) {
                 $p = new $ImageClass($p);
             }
             return $pid;
         }
         return new $ImageClass($pid);
     }));
     $twig->addFunction(new Twig_SimpleFunction('TimberTerm', function ($pid, $TermClass = 'TimberTerm') {
         if (is_array($pid) && !TimberHelper::is_array_assoc($pid)) {
             foreach ($pid as &$p) {
                 $p = new $TermClass($p);
             }
             return $pid;
         }
         return new $TermClass($pid);
     }));
     $twig->addFunction(new Twig_SimpleFunction('TimberUser', function ($pid, $UserClass = 'TimberUser') {
         if (is_array($pid) && !TimberHelper::is_array_assoc($pid)) {
             foreach ($pid as &$p) {
                 $p = new $UserClass($p);
             }
             return $pid;
         }
         return new $UserClass($pid);
     }));
     /* TimberObjects Alias */
     $twig->addFunction(new Twig_SimpleFunction('Post', function ($pid, $PostClass = 'TimberPost') {
         if (is_array($pid) && !TimberHelper::is_array_assoc($pid)) {
             foreach ($pid as &$p) {
                 $p = new $PostClass($p);
             }
             return $pid;
         }
//.........这里部分代码省略.........

 /**
  * get a preview of your post, if you have an excerpt it will use that,
  * otherwise it will pull from the post_content.
  * If there's a <!-- more --> tag it will use that to mark where to pull through.
  * @api
  * @example
  * ```twig
  * <p>{{post.get_preview(50)}}</p>
  * ```
  * @param int $len The number of words that WP should use to make the tease. (Isn't this better than [this mess](http://wordpress.org/support/topic/changing-the-default-length-of-the_excerpt-1?replies=14)?). If you've set a post_excerpt on a post, we'll use that for the preview text; otherwise the first X words of the post_content
  * @param bool $force What happens if your custom post excerpt is longer then the length requested? By default (`$force = false`) it will use the full `post_excerpt`. However, you can set this to true to *force* your excerpt to be of the desired length
  * @param string $readmore The text you want to use on the 'readmore' link
  * @param bool $strip Strip tags? yes or no. tell me!
  * @return string of the post preview
  */
 function get_preview($len = 50, $force = false, $readmore = 'Read More', $strip = true)
 {
     $text = '';
     $trimmed = false;
     if (isset($this->post_excerpt) && strlen($this->post_excerpt)) {
         if ($force) {
             $text = TimberHelper::trim_words($this->post_excerpt, $len, false);
             $trimmed = true;
         } else {
             $text = $this->post_excerpt;
         }
     }
     if (!strlen($text) && preg_match('/<!--\\s?more(.*?)?-->/', $this->post_content, $readmore_matches)) {
         $pieces = explode($readmore_matches[0], $this->post_content);
         $text = $pieces[0];
         if ($force) {
             $text = TimberHelper::trim_words($text, $len, false);
             $trimmed = true;
         }
         $text = do_shortcode($text);
     }
     if (!strlen($text)) {
         $text = TimberHelper::trim_words($this->get_content(), $len, false);
         $trimmed = true;
     }
     if (!strlen(trim($text))) {
         return trim($text);
     }
     if ($strip) {
         $text = trim(strip_tags($text));
     }
     if (strlen($text)) {
         $text = trim($text);
         $last = $text[strlen($text) - 1];
         if ($last != '.' && $trimmed) {
             $text .= ' &hellip;';
         }
         if (!$strip) {
             $last_p_tag = strrpos($text, '</p>');
             if ($last_p_tag !== false) {
                 $text = substr($text, 0, $last_p_tag);
             }
             if ($last != '.' && $trimmed) {
                 $text .= ' &hellip; ';
             }
         }
         $read_more_class = apply_filters('timber/post/get_preview/read_more_class', "read-more");
         if ($readmore && isset($readmore_matches) && !empty($readmore_matches[1])) {
             $text .= ' <a href="' . $this->get_permalink() . '" class="' . $read_more_class . '">' . trim($readmore_matches[1]) . '</a>';
         } elseif ($readmore) {
             $text .= ' <a href="' . $this->get_permalink() . '" class="' . $read_more_class . '">' . trim($readmore) . '</a>';
         }
         if (!$strip && $last_p_tag && (strpos($text, '<p>') || strpos($text, '<p '))) {
             $text .= '</p>';
         }
     }
     return trim($text);
 }

 /**
  * @param Twig_Environment $twig
  * @return Twig_Environment
  */
 function add_twig_filters($twig)
 {
     /* image filters */
     $twig->addFilter('resize', new Twig_Filter_Function(array('TimberImageHelper', 'resize')));
     $twig->addFilter('letterbox', new Twig_Filter_Function('wp_resize_letterbox'));
     $twig->addFilter('tojpg', new Twig_Filter_Function(array('TimberImageHelper', 'img_to_jpg')));
     $twig->addFilter('get_src_from_attachment_id', new Twig_Filter_Function('twig_get_src_from_attachment_id'));
     /* debugging filters */
     $twig->addFilter('docs', new Twig_Filter_function('twig_object_docs'));
     $twig->addFilter('get_class', new Twig_Filter_Function('twig_get_class'));
     $twig->addFilter('get_type', new Twig_Filter_Function('twig_get_type'));
     $twig->addFilter('print_r', new Twig_Filter_Function('twig_print_r'));
     $twig->addFilter('print_a', new Twig_Filter_Function('twig_print_a'));
     /* other filters */
     $twig->addFilter('stripshortcodes', new Twig_Filter_Function('strip_shortcodes'));
     $twig->addFilter('array', new Twig_Filter_Function(array($this, 'to_array')));
     $twig->addFilter('excerpt', new Twig_Filter_Function('twig_make_excerpt'));
     $twig->addFilter('function', new Twig_Filter_Function(array($this, 'exec_function')));
     $twig->addFilter('path', new Twig_Filter_Function('twig_get_path'));
     $twig->addFilter('pretags', new Twig_Filter_Function(array($this, 'twig_pretags')));
     $twig->addFilter('sanitize', new Twig_Filter_Function('sanitize_title'));
     $twig->addFilter('shortcodes', new Twig_Filter_Function('twig_shortcodes'));
     $twig->addFilter('time_ago', new Twig_Filter_Function('twig_time_ago'));
     $twig->addFilter('twitterify', new Twig_Filter_Function(array('TimberHelper', 'twitterify')));
     $twig->addFilter('twitterfy', new Twig_Filter_Function(array('TimberHelper', 'twitterify')));
     $twig->addFilter('wp_body_class', new Twig_Filter_Function('twig_body_class'));
     $twig->addFilter('wpautop', new Twig_Filter_Function('wpautop'));
     $twig->addFilter('relative', new Twig_Filter_Function(function ($link) {
         return TimberHelper::get_rel_url($link, true);
     }));
     $twig->addFilter('truncate', new Twig_Filter_Function(function ($text, $len) {
         return TimberHelper::trim_words($text, $len);
     }));
     /* actions and filters */
     $twig->addFunction(new Twig_SimpleFunction('action', function () {
         call_user_func_array('do_action', func_get_args());
     }));
     $twig->addFilter(new Twig_SimpleFilter('apply_filters', function () {
         $args = func_get_args();
         $tag = current(array_splice($args, 1, 1));
         return apply_filters_ref_array($tag, $args);
     }));
     $twig->addFunction(new Twig_SimpleFunction('function', array(&$this, 'exec_function')));
     $twig->addFunction(new Twig_SimpleFunction('fn', array(&$this, 'exec_function')));
     /* TimberObjects */
     $twig->addFunction(new Twig_SimpleFunction('TimberPost', function ($pid, $PostClass = 'TimberPost') {
         if (is_array($pid) && !TimberHelper::is_array_assoc($pid)) {
             foreach ($pid as &$p) {
                 $p = new $PostClass($p);
             }
             return $pid;
         }
         return new $PostClass($pid);
     }));
     $twig->addFunction(new Twig_SimpleFunction('TimberImage', function ($pid, $ImageClass = 'TimberImage') {
         if (is_array($pid) && !TimberHelper::is_array_assoc($pid)) {
             foreach ($pid as &$p) {
                 $p = new $ImageClass($p);
             }
             return $pid;
         }
         return new $ImageClass($pid);
     }));
     $twig->addFunction(new Twig_SimpleFunction('TimberTerm', function ($pid, $TermClass = 'TimberTerm') {
         if (is_array($pid) && !TimberHelper::is_array_assoc($pid)) {
             foreach ($pid as &$p) {
                 $p = new $TermClass($p);
             }
             return $pid;
         }
         return new $TermClass($pid);
     }));
     /* bloginfo and translate */
     $twig->addFunction('bloginfo', new Twig_SimpleFunction('bloginfo', function ($show = '', $filter = 'raw') {
         return get_bloginfo($show, $filter);
     }));
     $twig->addFunction('__', new Twig_SimpleFunction('__', function ($text, $domain = 'default') {
         return __($text, $domain);
     }));
     $twig = apply_filters('get_twig', $twig);
     return $twig;
 }

 /**
  * add meta_description
  *
  * hook after post has loaded to add a unique meta-description
  *
  */
 public static function meta_description()
 {
     $post = new \TimberPost();
     // check for custom field
     $description = wptexturize($post->get_field('meta_description'));
     // else use preview
     if (empty($description)) {
         $description = str_replace('', "'", $post->get_preview(40, true, false, true));
     }
     // finally use the blog description
     if (empty($description)) {
         $description = get_bloginfo('description', 'display');
     }
     $description = esc_attr($description);
     // limit to SEO recommended length
     if (strlen($description) > 155) {
         $description = substr($description, 0, 155);
         $description = \TimberHelper::trim_words($description, str_word_count($description) - 1);
     }
     return $description;
 }

 /**
  * add meta_description
  *
  * hook after post has loaded to add a unique meta-description
  *
  */
 public static function meta_description()
 {
     $post = new \TimberPost();
     // check for custom field
     $description = wptexturize($post->get_field('meta_description'));
     if (is_tax()) {
         if ($temp = term_description(get_queried_object(), get_query_var('taxonomy'))) {
             $description = $temp;
         }
     } elseif (is_post_type_archive()) {
         if ($temp = get_the_archive_description()) {
             $description = $temp;
         }
     }
     // else use preview
     if (empty($description)) {
         $description = str_replace('', "'", $post->get_preview(40, true, false, true));
     }
     // finally use the blog description
     if (empty($description)) {
         $description = get_bloginfo('description', 'raw');
     }
     $description = esc_attr(wp_strip_all_tags($description));
     // limit to SEO recommended length
     if (strlen($description) > 155) {
         $description = substr($description, 0, 155);
         $description = \TimberHelper::trim_words($description, str_word_count($description) - 1);
     }
     return $description;
 }