在 BuddyPress 消息预览窗口中将消息截断一行（225 个字符），然后附加一个水平省略号。
不幸的是，此 HTML 实体显示为字符串，未被解析为显示为椭圆。
椭圆的HTML代码我们都试过了，都显示为字符串
在 /plugins/bp-core/bp-core-template.php 文件中控制这个的函数（起始行 878）
有人知道如何解决这个问题吗？非常非常感谢。 （下面的代码）
function bp_create_excerpt( $text, $length = 225, $options = array() ) {
// Backward compatibility. The third argument used to be a boolean $filter_shortcodes.
$filter_shortcodes_default = is_bool( $options ) ? $options : true;
$r = bp_parse_args(
$options,
array(
'ending' => __( ' [U+02026] ' , 'buddypress' ),
'exact' => false,
'html' => true,
'filter_shortcodes' => $filter_shortcodes_default,
'strip_tags' => false,
'remove_links' => false,
),
'create_excerpt'
);
// Save the original text, to be passed along to the filter.
$original_text = $text;
/**
* Filters the excerpt length to trim text to.
*
* @since 1.5.0
*
* @param int $length Length of returned string, including ellipsis.
*/
$length = apply_filters( 'bp_excerpt_length', $length );
/**
* Filters the excerpt appended text value.
*
* @since 1.5.0
*
* @param string $value Text to append to the end of the excerpt.
*/
$ending = apply_filters( 'bp_excerpt_append_text', $r['ending'] );
// Remove shortcodes if necessary.
if ( ! empty( $r['filter_shortcodes'] ) ) {
$text = strip_shortcodes( $text );
}
// When $html is true, the excerpt should be created without including HTML tags in the
// excerpt length.
if ( ! empty( $r['html'] ) ) {
// The text is short enough. No need to truncate.
if ( mb_strlen( preg_replace( '/<.*?>/', '', $text ) ) <= $length ) {
return $text;
}
$totalLength = mb_strlen( strip_tags( $ending ) );
$openTags = array();
$truncate = '';
// Find all the tags and HTML comments and put them in a stack for later use.
preg_match_all( '/(<\/?([\w+!]+)[^>]*>)?([^<>]*)/', $text, $tags, PREG_SET_ORDER );
foreach ( $tags as $tag ) {
// Process tags that need to be closed.
if ( !preg_match( '/img|br|input|hr|area|base|basefont|col|frame|isindex|link|meta|param/s', $tag[2] ) ) {
if ( preg_match( '/<[\w]+[^>]*>/s', $tag[0] ) ) {
array_unshift( $openTags, $tag[2] );
} elseif ( preg_match('/<\/([\w]+)[^>]*>/s', $tag[0], $closeTag ) ) {
$pos = array_search( $closeTag[1], $openTags );
if ( $pos !== false ) {
array_splice( $openTags, $pos, 1 );
}
}
}
$truncate .= $tag[1];
$contentLength = mb_strlen( preg_replace( '/&[0-9a-z]{2,8};|&#[0-9]{1,7};|&#x[0-9a-f]{1,6};/i', ' ', $tag[3] ) );
if ( $contentLength + $totalLength > $length ) {
$left = $length - $totalLength;
$entitiesLength = 0;
if ( preg_match_all( '/&[0-9a-z]{2,8};|&#[0-9]{1,7};|&#x[0-9a-f]{1,6};/i', $tag[3], $entities, PREG_OFFSET_CAPTURE ) ) {
foreach ( $entities[0] as $entity ) {
if ( $entity[1] + 1 - $entitiesLength <= $left ) {
$left--;
$entitiesLength += mb_strlen( $entity[0] );
} else {
break;
}
}
}
$truncate .= mb_substr( $tag[3], 0 , $left + $entitiesLength );
break;
} else {
$truncate .= $tag[3];
$totalLength += $contentLength;
}
if ( $totalLength >= $length ) {
break;
}
}
} else {
// Strip HTML tags if necessary.
if ( ! empty( $r['strip_tags'] ) ) {
$text = strip_tags( $text );
}
// Remove links if necessary.
if ( ! empty( $r['remove_links'] ) ) {
$text = preg_replace( '#^\s*(https?://[^\s"]+)\s*$#im', '', $text );
}
if ( mb_strlen( $text ) <= $length ) {
/**
* Filters the final generated excerpt.
*
* @since 1.1.0
*
* @param string $text Generated excerpt.
* @param string $original_text Original text provided.
* @param int $length Length of returned string, including ellipsis.
* @param array $options Array of HTML attributes and options.
*/
return apply_filters( 'bp_create_excerpt', $text, $original_text, $length, $options );
} else {
$truncate = mb_substr( $text, 0, $length - mb_strlen( $ending ) );
}
}
// If $exact is false, we can't break on words.
if ( empty( $r['exact'] ) ) {
// Find the position of the last space character not part of a tag.
preg_match_all( '/<[a-z\!\/][^>]*>/', $truncate, $_truncate_tags, PREG_OFFSET_CAPTURE );
// Rekey tags by the string index of their last character.
$truncate_tags = array();
if ( ! empty( $_truncate_tags[0] ) ) {
foreach ( $_truncate_tags[0] as $_tt ) {
$_tt['start'] = $_tt[1];
$_tt['end'] = $_tt[1] + strlen( $_tt[0] );
$truncate_tags[ $_tt['end'] ] = $_tt;
}
}
$truncate_length = mb_strlen( $truncate );
$spacepos = $truncate_length + 1;
for ( $pos = $truncate_length - 1; $pos >= 0; $pos-- ) {
// Word boundaries are spaces and the close of HTML tags, when the tag is preceded by a space.
$is_word_boundary = ' ' === $truncate[ $pos ];
if ( ! $is_word_boundary && isset( $truncate_tags[ $pos - 1 ] ) ) {
$preceding_tag = $truncate_tags[ $pos - 1 ];
if ( ' ' === $truncate[ $preceding_tag['start'] - 1 ] ) {
$is_word_boundary = true;
break;
}
}
if ( ! $is_word_boundary ) {
continue;
}
// If there are no tags in the string, the first space found is the right one.
if ( empty( $truncate_tags ) ) {
$spacepos = $pos;
break;
}
// Look at each tag to see if the space is inside of it.
$intag = false;
foreach ( $truncate_tags as $tt ) {
if ( $pos > $tt['start'] && $pos < $tt['end'] ) {
$intag = true;
break;
}
}
if ( ! $intag ) {
$spacepos = $pos;
break;
}
}
if ( $r['html'] ) {
$bits = mb_substr( $truncate, $spacepos );
preg_match_all( '/<\/([a-z]+)>/', $bits, $droppedTags, PREG_SET_ORDER );
if ( !empty( $droppedTags ) ) {
foreach ( $droppedTags as $closingTag ) {
if ( !in_array( $closingTag[1], $openTags ) ) {
array_unshift( $openTags, $closingTag[1] );
}
}
}
}
$truncate = rtrim( mb_substr( $truncate, 0, $spacepos ) );
}
$truncate .= $ending;
if ( !empty( $r['html'] ) ) {
foreach ( $openTags as $tag ) {
$truncate .= '</' . $tag . '>';
}
}
/** This filter is documented in /bp-core/bp-core-template.php */
return apply_filters( 'bp_create_excerpt', $truncate, $original_text, $length, $options );
}
add_filter( 'bp_create_excerpt', 'stripslashes_deep' );
add_filter( 'bp_create_excerpt', 'force_balance_tags' );
试图让消息预览窗口正确显示 HTML 实体，而不是实际的字符串。
要在 BuddyPress 的消息预览窗口中显示水平省略号而不是 HTML 实体字符串，您可以同样使用省略号的实际 Unicode 字符替换实体字符串
你可以这样写
'ending' => __( '…' , 'buddypress' )