当您从帖子编辑屏幕上传附件时，WordPress将当前帖子ID设置为post_parent 附件的。这就是您获取这些附件的方式：

$post_ID = 123;
$attachments = get_posts(
    array(
        \'post_type\'      => \'attachment\',
        \'post_status\'    => \'inherit\',
        \'post_parent\'    => $post_ID,
        \'post_per_page\'  => -1,
        \'post_mime_type\' => \'image/*\'
    )
);
foreach ( $attachments as $a ) {
    $info = wp_get_attachment_image_src( $a->ID, \'full\' );
    $info[ 0 ]; // url to the image
    $info[ 1 ]; // image with in px
    $info[ 2 ]; // image height in px
    $info[ 3 ]; // TRUE if the image is a resized one
    dump( $info[ 0 ] );
}