WordPress Plugin to Display Your Site's Current PageRank

functions.php

<?php
function pagerank_sc( $paras = '', $content = '' ) {

    $cache_key = 'functions_pagerank';
    $cache = get_transient( $cache_key );

    if ( !$cache ) {

        $fileout = wp_remote_get( 'http://prapi.net/pr.php?url=' . <code>get_site_url() </code>. '&amp;f=text' );

        if ( isset( $fileout[ 'body' ] ) ) {
            $content = $fileout[ 'body' ];
            set_transient( $cache_key, $content, 86400 );
        }

    } else {

        $content = $cache;
    }

    return $content;
}
add_shortcode( 'pagerank', 'pagerank_sc' );
?>

If you have a need to add your site's current PageRank to a page or post, the following piece of code, added to your theme's functions.php file, will achieve just that.

All you have to add in a post or page is add [pagerank] wherever you wish the PageRank to appear.