获取wordpress文章中所有的图片及图片数量

function hui_get_thumbnail( $single=true, $must=true ) {

    global $post;

    $html = '';

    if ( has_post_thumbnail() ) {

        $domsxe = simplexml_load_string(get_the_post_thumbnail());

        $src = $domsxe->attributes()->src;

        $src_array = wp_get_attachment_image_src(hui_get_attachment_id_from_src($src), 'thumbnail');

        $html = sprintf('<li><img src="%s" /></li>', $src_array[0]);

    } else {

        $content = $post->post_content;

        preg_match_all('/<img.*?(?: |\t|\r|\n)?src=['"]?(.+?)['"]?(?:(?: |\t|\r|\n)+.*?)?>/sim', $content, $strResult, PREG_PATTERN_ORDER);

        $images = $strResult[1];

        $counter = count($strResult[1]);

        $i = 0;

        foreach($images as $src){

            $i++;

            $src2 = wp_get_attachment_image_src(hui_get_attachment_id_from_src($src), 'thumbnail');

            $src2 = $src2[0];

            if( !$src2 && true ){

                $src = $src;

            }else{

                $src = $src2;

            }

            $item = sprintf('<li><img src="%s" /></li>', $src);

            if( $single){

                return $item;

                break;

            }

            $html .= $item;

            if(

                ($counter >= 4 && $counter < 8 && $i >= 4) ||

                ($counter >= 8 && $i >= 8) ||

                ($counter > 0 && $counter < 4 && $i >= $counter)

            ){

                break;

            }

        }

    }

    return $html;

}

function hui_get_attachment_id_from_src ($link) {

    global $wpdb;

    $link = preg_replace('/-d+xd+(?=.(jpg|jpeg|png|gif)$)/i', '', $link);

    return $wpdb->get_var("SELECT ID FROM {$wpdb->posts} WHERE guid='$link'");

}

<!--?php echo hui_get_thumbnail(false,true);?-->

if( !function_exists('get_post_images_number') ){  

    function get_post_images_number(){  

        global $post;  

        $content = $post->post_content;    

        preg_match_all('/<img.*?(?: |\\t|\\r|\\n)?src=[\'"]?(.+?)[\'"]?(?:(?: |\\t|\\r|\\n)+.*?)?>/sim', $content, $result, PREG_PATTERN_ORDER);    

        return count($result[1]);    

    }  

}

<!--?php echo get_post_images_number().'张图片' ?-->