链接按钮网址计数php和wordpress

我在我的wordpress中有一个功能，它可以在我身后的Facebook晒黑的号码后面显示，更准确地为我带来了帖子所拥有的份额！我试图解决该功能，更多错误提示，我需要帮助！

遵循功能：

function ia_fb_count($url_post) {
//Get the transient value from database
$fbcount = get_transient( 'fblcount' );
    if ( empty( $fbcount ) ){
        //If no value stored, get the like count
        $file = file_get_contents('http://graph.facebook.com/?ids="$url_post"');
            $jd = json_decode($file);
            $fbcount = number_format($jd->{'likes'});

        // Set the facebook likes transient value for 24 Hours
        set_transient('fblcount', $fbcount, 60*60*24 );
        // Also, return it at the same time
        return $fbcount;
    } else {
        // Transient Value is present, return it
        return $fbcount;
    }

}

像这样调用我主题中的函数：

<?php
                $url_post = the_permalink(); 
                echo ia_fb_count($url_post);?>

有人可以帮我吗？