wp_trim_words( string $text, int $num_words = 55, string $more = null )

使用示例

• 示例1

  剥离格式的示例：

  <?php
  echo wp_trim_words( get_the_content(), 40, '...' );
  ?>
  
  

• 示例2

  此函数用于修剪溢出文本。我曾经在较小的屏幕上以固定高度的div显示经过修剪的标题。这只是一行代码：）

  <?php echo wp_trim_words( get_the_title(), 15 ); ?>

• 示例3

  注意：wp_trim_words()适用于任何文本字符串：

  $text = 'Some very long text';
  $words = 20;
  $more = ' […]';
  
  $excerpt = wp_trim_words( $text, $words, $more );
  

• 示例4

  如果出于某种原因，您需要修剪的单词，这里是此函数的修改版本，用于返回数组中前后的单词：

  if( ! function_exists( 'smyles_wp_split_words' ) ){
  	/**
  	 * Split a string based on word count
  	 *
  	 * This is similar to WordPress wp_trim_words function, but instead of just trimming after a certain amount of
  	 * words, this function returns an array with 'before' and 'after' keys -- providing you the string of text up
  	 * to the number of words (in before key), and the words after (in the after key).  After key will be empty string
  	 * if there are less words in the passed string than number of words to split on.
  	 *
  	 *
  	 * @param string    $text
  	 * @param int       $num_words
  	 *
  	 * @return array    Array with `before` and `after` keys. The `before` key contains all words up to $num_words, the
  	 *                  `after` key contains the words after $num_words (or empty string if passed string has less words
  	 *                  than passed in $text)
  	 *
  	 */
  	function smyles_wp_split_words( $text, $num_words = 55 ) {
  		$text = wp_strip_all_tags( $text );
  		/*
  		 * translators: If your word count is based on single characters (e.g. East Asian characters),
  		 * enter 'characters_excluding_spaces' or 'characters_including_spaces'. Otherwise, enter 'words'.
  		 * Do not translate into your own language.
  		 */
  		if ( strpos( _x( 'words', 'Word count type. Do not translate!' ), 'characters' ) === 0 && preg_match( '/^utf\-?8$/i', get_option( 'blog_charset' ) ) ) {
  			$text = trim( preg_replace( "/[\n\r\t ]+/", ' ', $text ), ' ' );
  			preg_match_all( '/./u', $text, $words_array_matches );
  			$words_array = $words_array_matches[0];
  			$sep         = '';
  		} else {
  			$words_array = preg_split( "/[\n\r\t ]+/", $text, -1, PREG_SPLIT_NO_EMPTY );
  			$sep         = ' ';
  		}
  		if ( count( $words_array ) > $num_words ) {
  			$before = implode( $sep, array_slice( $words_array, 0, $num_words ) );
  			$after  = implode( $sep, array_slice( $words_array, $num_words, count( $words_array ) - 1 ) );
  		} else {
  			$before = implode( $sep, $words_array );
  		}
  		$results = array(
  			'before' => $before,
  			'after' => isset( $after ) ? $after : ''
  		);
  		return $results;
  	}
  }
  

• 示例5

  示例：在评论自定义查询中显示评论摘录。

  $args = array(
  	'number' => 3,
  );
  $comments_query = new WP_Comment_Query;
  $comments = $comments_query->query( $args );
  if ( $comments ) {
  	foreach ( $comments as $comment ) {
  		echo wp_trim_words( $comment->comment_content, 20, ' […]' );
  	}
  }