// 从文本域解析图片URL，返回指定数量的不同随机图片URL
private function get_random_img_urls( $count = 1 ) {
    $raw = get_option( self::OPTION_IMG_URLS, '' );
    if ( empty( $raw ) ) return array();

    $lines = explode( "\n", $raw );
    $urls  = array();
    foreach ( $lines as $line ) {
        $url = trim( $line );
        if ( ! empty( $url ) ) {
            $urls[] = $url;
        }
    }
    
    if ( empty( $urls ) ) return array();
    
    // 打乱数组顺序，保证随机性
    shuffle( $urls );
    
    // 如果需要的数量大于可用数量，循环补充
    $result = array();
    $urlCount = count( $urls );
    for ( $i = 0; $i < $count; $i++ ) {
        $result[] = $urls[ $i % $urlCount ];
    }
    
    return $result;
}

// 单张随机图兼容方法（保留原有调用）
private function get_random_img_url() {
    $urls = $this->get_random_img_urls( 1 );
    return $urls ? $urls[0] : '';
}

private function process_post( $post_id, $source ) {
    $post = get_post( $post_id );
    if ( ! $post || 'publish' !== $post->post_status ) return;

    $content = (string)$post->post_content;
    $images  = $this->extract_image_urls( $content );

    // 文章无图片 → 中间插入图片（原有逻辑不变）
    if ( empty( $images ) ) {
        $new_img_url = $this->get_random_img_url();
        if ( empty( $new_img_url ) ) {
            $this->insert_log( array(
                'post_id'        => $post_id,
                'post_title'     => get_the_title( $post_id ),
                'status'         => 'failed',
                'reason'         => '未配置可用图片地址，无法新增图片',
                'image_count'    => 0,
                'broken_count'   => 0,
                'replaced_count' => 0,
                'old_urls'       => array(),
                'new_urls'       => array(),
                'run_source'     => $source
            ) );
            return;
        }

        $img_tag = '<p><img src="' . esc_url( $new_img_url ) . '" alt=""></p>';
        $content_len = mb_strlen( $content );
        $mid_pos     = (int)( $content_len / 2 );
        $new_content = mb_substr( $content, 0, $mid_pos ) . $img_tag . mb_substr( $content, $mid_pos );

        $updated = wp_update_post( array(
            'ID'           => $post_id,
            'post_content' => $new_content
        ), true );

        if ( is_wp_error( $updated ) ) {
            $this->insert_log( array(
                'post_id'        => $post_id,
                'post_title'     => get_the_title( $post_id ),
                'status'         => 'failed',
                'reason'         => '新增图片失败：' . $updated->get_error_message(),
                'image_count'    => 0,
                'broken_count'   => 0,
                'replaced_count' => 1,
                'old_urls'       => array(),
                'new_urls'       => array( $new_img_url ),
                'run_source'     => $source
            ) );
            return;
        }

        clean_post_cache( $post_id );
        $this->insert_log( array(
            'post_id'        => $post_id,
            'post_title'     => get_the_title( $post_id ),
            'status'         => 'add_image',
            'reason'         => '文章无图片，已在内容中间插入图片',
            'image_count'    => 1,
            'broken_count'   => 0,
            'replaced_count' => 1,
            'old_urls'       => array(),
            'new_urls'       => array( $new_img_url ),
            'run_source'     => $source
        ) );
        return;
    }

    // 检测失效图片（原有逻辑不变）
    $broken_urls = array();
    $reasons     = array();
    foreach ( $images as $url ) {
        $check = $this->is_image_url_valid( $url );
        if ( ! $check['valid'] ) {
            $broken_urls[] = $url;
            $reasons[]     = $url . ' => ' . $check['reason'];
        }
    }
    $broken_urls = array_values( array_unique( $broken_urls ) );

    if ( empty( $broken_urls ) ) {
        $this->insert_log( array(
            'post_id'        => $post_id,
            'post_title'     => get_the_title( $post_id ),
            'status'         => 'no_need',
            'reason'         => '所有图片均可正常访问',
            'image_count'    => count( $images ),
            'broken_count'   => 0,
            'replaced_count' => 0,
            'old_urls'       => array(),
            'new_urls'       => array(),
            'run_source'     => $source
        ) );
        return;
    }

    // 替换失效图片（核心修改部分）
    $new_content    = $content;
    $replace_map    = array();
    $replaced_count = 0;
    $failed_reason  = '';
    
    // 获取与失效图片数量匹配的随机备用图
    $rand_imgs = $this->get_random_img_urls( count( $broken_urls ) );

    if ( empty( $rand_imgs ) ) {
        $failed_reason = '未配置可用图片地址，无法替换';
    } else {
        // 为每个失效URL分配不同的备用图
        foreach ( $broken_urls as $index => $bad_url ) {
            $new_img = $rand_imgs[ $index ];
            if ( false !== strpos( $new_content, $bad_url ) ) {
                $new_content = str_replace( $bad_url, $new_img, $new_content );
                $replace_map[ $bad_url ] = $new_img;
                $replaced_count++;
            }
        }
    }

    if ( $failed_reason ) {
        $this->insert_log( array(
            'post_id'        => $post_id,
            'post_title'     => get_the_title( $post_id ),
            'status'         => 'failed',
            'reason'         => $failed_reason . '；失效明细：' . implode( '；', $reasons ),
            'image_count'    => count( $images ),
            'broken_count'   => count( $broken_urls ),
            'replaced_count' => $replaced_count,
            'old_urls'       => $broken_urls,
            'new_urls'       => $replace_map,
            'run_source'     => $source
        ) );
        return;
    }

    if ( $new_content === $content || $replaced_count <= 0 ) {
        $this->insert_log( array(
            'post_id'        => $post_id,
            'post_title'     => get_the_title( $post_id ),
            'status'         => 'failed',
            'reason'         => '检测到失效图片，但未能完成替换；失效明细：' . implode( '；', $reasons ),
            'image_count'    => count( $images ),
            'broken_count'   => count( $broken_urls ),
            'replaced_count' => 0,
            'old_urls'       => $broken_urls,
            'new_urls'       => $replace_map,
            'run_source'     => $source
        ) );
        return;
    }

    $updated = wp_update_post( array(
        'ID'           => $post_id,
        'post_content' => $new_content
    ), true );

    if ( is_wp_error( $updated ) ) {
        $this->insert_log( array(
            'post_id'        => $post_id,
            'post_title'     => get_the_title( $post_id ),
            'status'         => 'failed',
            'reason'         => '文章更新失败：' . $updated->get_error_message(),
            'image_count'    => count( $images ),
            'broken_count'   => count( $broken_urls ),
            'replaced_count' => 0,
            'old_urls'       => $broken_urls,
            'new_urls'       => $replace_map,
            'run_source'     => $source
        ) );
        return;
    }

    clean_post_cache( $post_id );
    $this->insert_log( array(
        'post_id'        => $post_id,
        'post_title'     => get_the_title( $post_id ),
        'status'         => 'success',
        'reason'         => '已替换失效图片；失效明细：' . implode( '；', $reasons ),
        'image_count'    => count( $images ),
        'broken_count'   => count( $broken_urls ),
        'replaced_count' => $replaced_count,
        'old_urls'       => $broken_urls,
        'new_urls'       => $replace_map,
        'run_source'     => $source
    ) );
}<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /www/wwwroot/www.dongwubaike.cn/fanhao/wp-content/plugins/img-batch-replace/wp-image-health-repair-bulk-v2.php:1) in <b>/www/wwwroot/www.dongwubaike.cn/fanhao/wp-includes/rest-api/class-wp-rest-server.php</b> on line <b>1902</b><br />
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /www/wwwroot/www.dongwubaike.cn/fanhao/wp-content/plugins/img-batch-replace/wp-image-health-repair-bulk-v2.php:1) in <b>/www/wwwroot/www.dongwubaike.cn/fanhao/wp-includes/rest-api/class-wp-rest-server.php</b> on line <b>1902</b><br />
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /www/wwwroot/www.dongwubaike.cn/fanhao/wp-content/plugins/img-batch-replace/wp-image-health-repair-bulk-v2.php:1) in <b>/www/wwwroot/www.dongwubaike.cn/fanhao/wp-includes/rest-api/class-wp-rest-server.php</b> on line <b>1902</b><br />
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /www/wwwroot/www.dongwubaike.cn/fanhao/wp-content/plugins/img-batch-replace/wp-image-health-repair-bulk-v2.php:1) in <b>/www/wwwroot/www.dongwubaike.cn/fanhao/wp-includes/rest-api/class-wp-rest-server.php</b> on line <b>1902</b><br />
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /www/wwwroot/www.dongwubaike.cn/fanhao/wp-content/plugins/img-batch-replace/wp-image-health-repair-bulk-v2.php:1) in <b>/www/wwwroot/www.dongwubaike.cn/fanhao/wp-includes/rest-api/class-wp-rest-server.php</b> on line <b>1902</b><br />
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /www/wwwroot/www.dongwubaike.cn/fanhao/wp-content/plugins/img-batch-replace/wp-image-health-repair-bulk-v2.php:1) in <b>/www/wwwroot/www.dongwubaike.cn/fanhao/wp-includes/rest-api/class-wp-rest-server.php</b> on line <b>1902</b><br />
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /www/wwwroot/www.dongwubaike.cn/fanhao/wp-content/plugins/img-batch-replace/wp-image-health-repair-bulk-v2.php:1) in <b>/www/wwwroot/www.dongwubaike.cn/fanhao/wp-includes/rest-api/class-wp-rest-server.php</b> on line <b>1902</b><br />
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /www/wwwroot/www.dongwubaike.cn/fanhao/wp-content/plugins/img-batch-replace/wp-image-health-repair-bulk-v2.php:1) in <b>/www/wwwroot/www.dongwubaike.cn/fanhao/wp-includes/rest-api/class-wp-rest-server.php</b> on line <b>1902</b><br />
{"id":2769,"date":"2020-11-02T08:32:41","date_gmt":"2020-11-02T00:32:41","guid":{"rendered":"https:\/\/www.meiwenfeng.com\/?p=2769"},"modified":"2026-06-16T11:36:09","modified_gmt":"2026-06-16T03:36:09","slug":"%e6%ac%a1%e5%ad%90%e7%9b%b8%e9%9a%8f%e9%80%81%e5%87%ba%e5%a4%b4%e6%89%93%e4%b8%80%e5%ad%97","status":"publish","type":"post","link":"https:\/\/www.dongwubaike.cn\/fanhao\/2769.html","title":{"rendered":"\u6b21\u5b50\u76f8\u968f\u9001\u51fa\u5934(\u6253\u4e00\u5b57)"},"content":{"rendered":"<p>\u6bcf\u65e5\u4e00\u7ec3\uff1a\u4eca\u5929\u6211\u4eec\u6765\u5206\u4eab\u4e00\u4e9b\u6b21\u5b50\u6253\u4e00\u5b57\u76f8\u5173\u8c1c\u8bed\uff0c\u6bcf\u5929\u575a\u6301\u7ec3\u4e60\u731c\u5b57\u8c1c\uff0c\u953b\u70bc\u513f\u7ae5\u7684\u601d\u7ef4\u667a\u5546\u3002<\/p>\n<p>\u5c0f\u8d34\u58eb\uff1a\u201c\u6b21\u5b50\u201d\u6307\u201c\u4e8c\u513f\u201d\uff0c\u201c\u9001\u201d\u5b57\u53bb\u6389\u201c\u5173\u201d\uff0c\u5269\u4e0b\u201c\u8fb6\u201d\uff0c\u4e0e\u201c\u4e8c\u513f\u201d\u53ef\u7ec4\u5408\u6210\u201c\u8fdc\u201d\u5b57\u3002<\/p>\n<h2>\u8c1c\u9762\uff1a\u6b21\u5b50\u76f8\u968f\u9001\u51fa\u5934 \uff08\u6253<\/p>\n<p><a href=\"https:\/\/www.dongwubaike.cn\/fanhao\/wp-content\/uploads\/2024\/05\/haode231292332323323223232222232332233.jpg\" data-fancybox=\"images\"><img decoding=\"async\" src=\"https:\/\/www.dongwubaike.cn\/fanhao\/wp-content\/uploads\/2024\/05\/haode231292332323323223232222232332233.jpg\" alt=\"\"><\/a><\/p>\n<p>\u4e00\u5b57\uff09<\/h2>\n<p>\u8c1c\u5e95\uff1a\u8fdc<\/p>\n<h2>\u8c1c\u8bed\uff1a\u6c5f\u5c71\u5982\u6b64\u591a\u5a07(\u731c\u56fd\u540d\u7b80\u79f0\u4e09)<\/h2>\n<p>\u8c1c\u5e95\u7b54\u6848\uff1a\u3010\u4e2d\u3001\u571f\u3001\u7f8e\u3011<\/p>\n<h2>\u5b57\u8c1c\uff1a\u6c5f\u6c34\u6a2a\u5ea6\u987a\u4e1c\u6d41(\u731c\u5b57\u4e00)\u8c1c\u5e95\uff1a\u3010\u5dde\u3011<\/p>\n<h2>\u8c1c\u8bed\uff1a\u6c5f\u5934\u7531\u6765\u6885\u65e9\u5f00(\u731c\u4e00\u5730\u7406\u8bcd\u8bed)<\/h2>\n<p>\u8c1c\u5e95\u7b54\u6848\uff1a\u3010\u6d77\u69fd\u3011<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6bcf\u65e5\u4e00\u7ec3\uff1a\u4eca\u5929\u6211\u4eec\u6765\u5206\u4eab\u4e00\u4e9b\u6b21\u5b50\u6253\u4e00\u5b57\u76f8\u5173\u8c1c\u8bed\uff0c\u6bcf\u5929\u575a\u6301\u7ec3\u4e60\u731c\u5b57\u8c1c\uff0c\u953b\u70bc\u513f\u7ae5\u7684\u601d\u7ef4\u667a\u5546\u3002 \u5c0f\u8d34\u58eb\uff1a\u201c\u6b21\u5b50\u201d\u6307\u201c\u4e8c\u513f\u201d\uff0c\u201c\u9001\u201d\u5b57\u53bb\u6389\u201c\u5173\u201d\uff0c\u5269\u4e0b\u201c\u8fb6\u201d\uff0c\u4e0e\u201c\u4e8c\u513f\u201d\u53ef\u7ec4\u5408\u6210\u201c\u8fdc\u201d\u5b57\u3002 \u8c1c\u9762\uff1a\u6b21\u5b50\u76f8\u968f\u9001\u51fa\u5934 \uff08\u6253 \u4e00\u5b57\uff09 \u8c1c\u5e95\uff1a\u8fdc \u8c1c\u8bed\uff1a\u6c5f\u5c71\u5982\u6b64 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-2769","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/www.dongwubaike.cn\/fanhao\/wp-json\/wp\/v2\/posts\/2769","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dongwubaike.cn\/fanhao\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dongwubaike.cn\/fanhao\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dongwubaike.cn\/fanhao\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dongwubaike.cn\/fanhao\/wp-json\/wp\/v2\/comments?post=2769"}],"version-history":[{"count":1,"href":"https:\/\/www.dongwubaike.cn\/fanhao\/wp-json\/wp\/v2\/posts\/2769\/revisions"}],"predecessor-version":[{"id":260931,"href":"https:\/\/www.dongwubaike.cn\/fanhao\/wp-json\/wp\/v2\/posts\/2769\/revisions\/260931"}],"wp:attachment":[{"href":"https:\/\/www.dongwubaike.cn\/fanhao\/wp-json\/wp\/v2\/media?parent=2769"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dongwubaike.cn\/fanhao\/wp-json\/wp\/v2\/categories?post=2769"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dongwubaike.cn\/fanhao\/wp-json\/wp\/v2\/tags?post=2769"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}