plugin-stats.php

## plugin-stats.php
<?php

// Read the original blog post here to understand what this is:
// http://simple-fields.com/2013/status-board-panel-to-show-wordpress-plugin-downloads/

define('WP_USE_THEMES', false);
define("WP_CACHE", false); // i get 404 if enabled
require('../wordpress/wp-blog-header.php');

class panic_dashboard_wp_plugin_stats {

	var $url_template = 'http://wpapi.org/api/plugin/%1$s.json',
		$plugin_slugs = "simple-fields,simple-history,cms-tree-page-view",
		$cache_group = "panic_dashboard_wp_plugin_stats",
		$cache_expire =  15, // in minutes
		$days_to_show = 30;

	function __construct() {

		if ( isset( $_GET["slugs"] ) && ! empty( $_GET["slugs"] ) ) $this->plugin_slugs = $_GET["slugs"];
		if ( isset( $_GET["days"] ) && ! empty( $_GET["days"] ) ) $this->days_to_show = $_GET["days"];

		$cache_key = md5( serialize($this->plugin_slugs) );
		$arr_plugins_data = wp_cache_get( $cache_key, $this->cache_group );

		// $force_reload = true;

		if ( true === $force_reload || false === $arr_plugins_data ) {

			// echo "<br>load from server";

			$arr_plugins_data = array();
			$arr_slugs = explode(",", $this->plugin_slugs);
			foreach ( $arr_slugs as $one_slug ) {
				$plugin_stats_url = sprintf($this->url_template, $one_slug);
				$remote_data = wp_remote_get( $plugin_stats_url );
				$arr_plugins_data[] = json_decode( $remote_data["body"] );
			}

			wp_cache_set( $cache_key, $arr_plugins_data, $this->cache_group, MINUTE_IN_SECONDS * $this->cache_expire );
		} else {
			// echo "<br>got from cache";
		}

		// some useful info in the plugins data array:
		// name, num_ratings, rating, stats, total_downloads, updated, version

		$arr_datasequences = array();
		foreach ( $arr_plugins_data as $key => $one_plugin_data ) {
			$arr_plugins_data[$key]->dashboard_stats = array();
			foreach ($one_plugin_data->stats as $stat_key => $stat_val) {
				$arr_plugins_data[$key]->dashboard_stats[] = array("title" => $stat_key, "value" => $stat_val);
			}
			$arr_plugins_data[$key]->dashboard_stats = array_slice( $arr_plugins_data[$key]->dashboard_stats, sizeof( $arr_plugins_data[$key]->dashboard_stats ) - $this->days_to_show );

			$arr_datasequences[] = array(
				"title" => $one_plugin_data->name,
				"datapoints" => $one_plugin_data->dashboard_stats
			);

		}

		$arr_json = array(
			"graph" => array(
				"title" => "Plugin stats for last $this->days_to_show days",
				"total" => true,
				"datasequences" => $arr_datasequences
			)
		);

		header("HTTP/1.1 200 OK");
		header('Content-Type: application/json');
		echo json_encode( $arr_json );

	}

}

new panic_dashboard_wp_plugin_stats();
/*
echo "<br>" . $wpdb->num_queries; ?> <?php _e('queries'); ?>. <?php timer_stop(1); ?> <?php _e('seconds');
*/