WordPress获取文章所有图片和数量方法

如果想用WordPress做成图片站或者CMS,主页可能需要获取文章所有图片,那么如何实现呢?下面教大家WordPress获取文章所有图片和数量方法:

wordpress主题获取文章中的所有图片

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'");
}

wordpress主题前台调用代码放在需要显示的位置上

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

获取wordpress文章内容中的图片数量值

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]);    
    }  
} 

wordpress前台显示代码

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

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方法来源:wazhuti

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