image_add_caption

函数
image_add_caption ( $html, $id, $caption, $title, $align, $url, $size, $alt = '' )
参数
  • (string) $html The image HTML markup to send.
    Required:
  • (int) $id Image attachment ID.
    Required:
  • (string) $caption Image caption.
    Required:
  • (string) $title Image title attribute (not used).
    Required:
  • (string) $align Image CSS alignment property.
    Required:
  • (string) $url Image source URL (not used).
    Required:
  • (string) $size Image size (not used).
    Required:
  • (string) $alt Image `alt` attribute (not used).
    Required:
    Default: (empty)
返回值
  • (string) The image HTML markup with caption shortcode.
定义位置
相关方法
_cleanup_image_add_captionadd_optionmaybe_add_columnadd_actiontag_description
引入
2.6.0
弃用
-

image_add_caption: 这个函数用于为图片添加标题。

在编辑器中添加带有标题的图像短码。

function image_add_caption( $html, $id, $caption, $title, $align, $url, $size, $alt = '' ) {

	/**
	 * Filters the caption text.
	 *
	 * Note: If the caption text is empty, the caption shortcode will not be appended
	 * to the image HTML when inserted into the editor.
	 *
	 * Passing an empty value also prevents the {@see 'image_add_caption_shortcode'}
	 * Filters from being evaluated at the end of image_add_caption().
	 *
	 * @since 4.1.0
	 *
	 * @param string $caption The original caption text.
	 * @param int    $id      The attachment ID.
	 */
	$caption = apply_filters( 'image_add_caption_text', $caption, $id );

	/**
	 * Filters whether to disable captions.
	 *
	 * Prevents image captions from being appended to image HTML when inserted into the editor.
	 *
	 * @since 2.6.0
	 *
	 * @param bool $bool Whether to disable appending captions. Returning true from the filter
	 *                   will disable captions. Default empty string.
	 */
	if ( empty( $caption ) || apply_filters( 'disable_captions', '' ) ) {
		return $html;
	}

	$id = ( 0 < (int) $id ) ? 'attachment_' . $id : '';

	if ( ! preg_match( '/width=["']([0-9]+)/', $html, $matches ) ) {
		return $html;
	}

	$width = $matches[1];

	$caption = str_replace( array( "rn", "r" ), "n", $caption );
	$caption = preg_replace_callback( '/<[a-zA-Z0-9]+(?: [^<>]+>)*/', '_cleanup_image_add_caption', $caption );

	// Convert any remaining line breaks to <br />.
	$caption = preg_replace( '/[ nt]*n[ t]*/', '<br />', $caption );

	$html = preg_replace( '/(class=["'][^'"]*)align(none|left|right|center)s?/', '$1', $html );
	if ( empty( $align ) ) {
		$align = 'none';
	}

	$shcode = '' . $html . ' ' . $caption . '';

	/**
	 * Filters the image HTML markup including the caption shortcode.
	 *
	 * @since 2.6.0
	 *
	 * @param string $shcode The image HTML markup with caption shortcode.
	 * @param string $html   The image HTML markup.
	 */
	return apply_filters( 'image_add_caption_shortcode', $shcode, $html );
}

常见问题

FAQs
查看更多 >