wordpress显示类似今日头条多张缩略图的获取办法

functions.php里加入如下：
（代码规则可根据自己实际要求来修改）

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;
    $link = preg_replace('/-\d+x\d+(?=\.(jpg|jpeg|png|gif)$)/i', '', $link);
    return $wpdb->get_var("SELECT ID FROM {$wpdb->posts} WHERE guid='$link'");
}

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;

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

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

}

前面调用：

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

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

本站亲自测试过，非常cool，但注意要配合一下css控制li和图片尺寸