在制作wordpress主题过程中，有遇见想要自动获取文章内所有图片的情况，一开始没有思路，后来，想起大前段的xiu主题貌似就拥有这样的功能，经过维维大神的扣扯后，现在大叔拿来分享哈，绝笔可用的嚎！
将代码插入functions.php
- 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'");
- }
以上代码规则可根据自己实际要求来修改
前端调用
- <?php echo hui_get_thumbnail(false,true);?>
