mysql - SQL 查询中出现意外的 T_CONSTANT_ENCAPSED_STRING 错误

Question

我在以下 SQL 查询中收到意外的 T_CONSTANT_ENCAPSED_STRING 错误:

mysql_query (UPDATE 'wp_posts' SET 'post_status' = 'publish' WHERE 'post_id' = '$id');

你们能看出错误可能出在哪里吗？

这里是完整的代码，以防有帮助:

    $key = 'feed';
    $post_ids = array(2263, 2249); 

    foreach ($post_ids as $id) {
    $feedurl = get_post_custom_values($key, $id);
    $feedurlstr = implode($feedurl);

    // Ignore - it determines whether feed is live and returns $result
    LiveOrNot($feedurlstr);

    if ( $result == "live" ) {
    mysql_query (UPDATE 'wp_posts' SET 'post_status' = 'publish' WHERE 'post_id' = '$id');
    }    
    elseif ( $result == "notlive" ) {
    mysql_query (UPDATE 'wp_posts' SET 'post_status' = 'draft' WHERE 'post_id' = '$id');
    }
    endif;
    }

Answer 1

将 SQL 语句括在引号中 - "。

mysql_query ("UPDATE 'wp_posts' SET 'post_status' = 'publish' WHERE 'post_id' = '$id'");