用最新的永久链接替换附件锚的hrefs。
原型
_fix_attachment_links( int|object $post )
参数
$post
(int|object)
(Required)
帖子ID或帖子对象。
返回值
(void|int|WP_Error)
如果没有固定,则无效。 0或
源文件
路径:wp-admin/includes/post.php
<?php
...
function _fix_attachment_links( $post ) {
$post = get_post( $post, ARRAY_A );
$content = $post['post_content'];
// Don't run if no pretty permalinks or post is not published, scheduled, or privately published.
if ( ! get_option( 'permalink_structure' ) || ! in_array( $post['post_status'], array( 'publish', 'future', 'private' ) ) )
return;
// Short if there aren't any links or no '?attachment_id=' strings (strpos cannot be zero)
if ( !strpos($content, '?attachment_id=') || !preg_match_all( '/<a ([^>]+)>[sS]+?</a>/', $content, $link_matches ) )
return;
$site_url = get_bloginfo('url');
$site_url = substr( $site_url, (int) strpos($site_url, '://') ); // remove the http(s)
$replace = '';
foreach ( $link_matches[1] as $key => $value ) {
if ( !strpos($value, '?attachment_id=') || !strpos($value, 'wp-att-')
|| !preg_match( '/href=(["'])[^"']*?attachment_id=(d+)[^"']*\1/', $value, $url_match )
|| !preg_match( '/rel=["'][^"']*wp-att-(d+)/', $value, $rel_match ) )
continue;
$quote = $url_match[1]; // the quote (single or double)
$url_id = (int) $url_match[2];
$rel_id = (int) $rel_match[1];
if ( !$url_id || !$rel_id || $url_id != $rel_id || strpos($url_match[0], $site_url) === false )
continue;
$link = $link_matches[0][$key];
$replace = str_replace( $url_match[0], 'href=' . $quote . get_attachment_link( $url_id ) . $quote, $link );
$content = str_replace( $link, $replace, $content );
}
if ( $replace ) {
$post['post_content'] = $content;
// Escape data pulled from DB.
$post = add_magic_quotes($post);
return wp_update_post($post);
}
}
...
?>
其他
英文文档:https://developer.wordpress.org/reference/functions/_fix_attachment_links/