有时在我的错误日志中，我会出现以下错误：

You have an error in your SQL syntax; 
check the manual that corresponds to your MySQL server version for the right syntax to 
use near \'\' at line 1    
    SELECT * 
    FROM c_posts 
    WHERE id = , 
    do_action(\'wp_ajax_inline-save\'), 
    call_user_func_array, 
    wp_ajax_inline_save, 
    edit_post, 
    wp_update_post, 
    wp_insert_post, 
    wp_transition_post_status, 
    do_action(\'transition_post_status\'), 
    call_user_func_array, 
    apt_check_required_transition, 
    apt_publish_post, 
    W3_Db->query

我认为这个插件有错误。这是一段代码：

/**
  * Function to check whether scheduled post is being published. If so, apt_publish_post should be called.
  *
  * @param $new_status
  * @param $old_status
  * @param $post
  * @return void
  */
 function apt_check_required_transition($new_status=\'\', $old_status=\'\', $post=\'\') {
global $post_ID; // Using the post id from global reference since it is not available       in $post object. Strange!

if (\'publish\' == $new_status) {
    apt_publish_post($post_ID);
}
 }

 /**
 * Function to save first image in post as post thumbmail.
 */
 function apt_publish_post($post_id)
  {
global $wpdb;

// First check whether Post Thumbnail is already set for this post.
if (get_post_meta($post_id, \'_thumbnail_id\', true) || get_post_meta($post_id, \'skip_post_thumb\', true)) {
    return;
}

$post = $wpdb->get_results("SELECT * FROM {$wpdb->posts} WHERE id = $post_id");

// Initialize variable used to store list of matched images as per provided regular expression
$matches = array();

// Get all images from post\'s body
preg_match_all(\'/<\\s*img [^\\>]*src\\s*=\\s*[\\""\\\']?([^\\""\\\'>]*)/i\', $post[0]->post_content, $matches);

if (count($matches)) {
    foreach ($matches[0] as $key => $image) {
        /**
         * If the image is from wordpress\'s own media gallery, then it appends the thumbmail id to a css class.
         * Look for this id in the IMG tag.
         */
        preg_match(\'/wp-image-([\\d]*)/i\', $image, $thumb_id);
        $thumb_id = $thumb_id[1];

        // If thumb id is not found, try to look for the image in DB. Thanks to "Erwin Vrolijk" for providing this code.
        if (!$thumb_id) {
            $image = substr($image, strpos($image, \'"\')+1);
            $result = $wpdb->get_results("SELECT ID FROM {$wpdb->posts} WHERE guid = \'".$image."\'");
            $thumb_id = $result[0]->ID;
        }

        // Ok. Still no id found. Some other way used to insert the image in post. Now we must fetch the image from URL and do the needful.
        if (!$thumb_id) {
            $thumb_id = apt_generate_post_thumb($matches, $key, $post[0]->post_content, $post_id);
        }

        // If we succeed in generating thumg, let\'s update post meta
        if ($thumb_id) {
            update_post_meta( $post_id, \'_thumbnail_id\', $thumb_id );
            break;
        }
    }
}
 }// end apt_publish_post()