给WordPress添加文章百度收录情况检测功能{代码版}

//WordPress添加百度文章收录情况检测
//http://www.zhidianju.com/608.html
function baidu_check($url, $post_id){
    $baidu_record  = get_post_meta($post_id,'baidu_record',true);
    if( $baidu_record != 1){
        $url='http://www.baidu.com/s?wd='.$url;
        $curl=curl_init();
        curl_setopt($curl,CURLOPT_URL,$url);
        curl_setopt($curl,CURLOPT_RETURNTRANSFER,1);
        $rs=curl_exec($curl);
        curl_close($curl);
        if(!strpos($rs,'没有找到该URL。您可以直接访问') && !strpos($rs,'很抱歉，没有找到与') ){
            update_post_meta($post_id, 'baidu_record', 1) || add_post_meta($post_id, 'baidu_record', 1, true);
            return 1;
        } else {
            return 0;
        }
    } else {
       return 1;
    }
}
function baidu_record() {
    global $wpdb;
    $post_id = ( null === $post_id ) ? get_the_ID() : $post_id;
    if(baidu_check(get_permalink($post_id), $post_id ) == 1) {
        echo '<a target="_blank" title="点击查看" rel="external nofollow" href="http://www.baidu.com/s?wd='.get_the_title().'">百度已收录</a>';
   } else {
        echo '<a style="color:red;" rel="external nofollow" title="点击提交，谢谢您！" target="_blank" href="http://zhanzhang.baidu.com/sitesubmit/index?sitename='.get_permalink().'">百度未收录</a>';
   }
}

<?php baidu_record(); ?>