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is_local_attachment › WordPress Function
Since2.0.0
已弃用n/a
› is_local_attachment ( $url )
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Determines whether an attachment URI is local and really an attachment.
For more information on this and similar theme functions, check out the {@link Conditional Tags} article in the Theme Developer Handbook.Related Functions: is_attachment, is_locale_switched, wp_ajax_upload_attachment, wp_delete_attachment, wp_count_attachments
源码
function is_local_attachment( $url ) { if ( ! str_contains( $url, home_url() ) ) { return false; } if ( str_contains( $url, home_url( '/?attachment_id=' ) ) ) { return true; } $id = url_to_postid( $url ); if ( $id ) { $post = get_post( $id ); if ( 'attachment' === $post->post_type ) { return true; } } return false; }