Stop Plugin Upgrade Notices

stop-plugin-upgrade.php

<?php  # -*- coding: utf-8 -*-

/*
 * Place the following code in the main plugin file (the one with the plugin
 * headers) to stop upgrade notices for this plugin.
 */

if ( ! function_exists( 't5_no_upgrade_check' ) )
{
	add_filter( 'http_request_args', 't5_no_upgrade_check', 5, 2 );

	/**
	 * Blocks update checks for this plugin.
	 *
	 * @author Mark Jaquith http://markjaquith.wordpress.com
	 * @link   http://wp.me/p56-65
	 * @param  array $r
	 * @param  string $url
	 * @return array
	 */
	function t5_no_upgrade_check( $r, $url )
	{
		// Not a plugin update request. Bail immediately.
		if ( 0 !== strpos( $url, 'http://api.wordpress.org/plugins/update-check' ) )
			return $r;

		$plugins = unserialize( $r['body']['plugins'] );
		$p_base  = plugin_basename( __FILE__ );

		unset (
			$plugins->plugins[$p_base],
			$plugins->active[array_search( $p_base, $plugins->active )]
		);

		$r['body']['plugins'] = serialize( $plugins );

		return $r;
	}
}