php curl 检查百度是否收录文章的例子

<?php
function d4v($url) {
    $url = &#39;http://www.baidu.com/s?wd=&#39; . $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, &#39;没有找到&#39;)) {
        return 1;
    } else {
        return 0;
    }
}
add_filter(&#39;the_content&#39;, &#39;baidu_submit&#39;);
function baidu_submit($content) {
    if (is_single() && current_user_can(&#39;manage_options&#39;)) if (d4v(get_permalink()) == 1) $content = "<p align=right>百度已收录(仅管理员可见)</p>" . $content;
    else $content = "<p align=right><b><a style=color:red target=_blank href=http://zhanzhang.baidu.com/sitesubmit/index?sitename=" . get_permalink() . ">百度未收录!点击此处提交</a></b>(仅管理员可见)</p>" . $content;
    return $content;
}
?>