Code to disable WordPress plugin updates

disable-plugin-updates

<?php
/* 
 * Disable plugin updates
 *
 * @param array  $r   Response header
 * @param string $url The update URL
 */
function slug_hidden_plugin( $r, $url ) {
	if ( 0 !== strpos( $url, 'http://api.wordpress.org/plugins/update-check' ) )
		return $r; // Not a plugin update request. Bail immediately.
	$plugins = unserialize( $r['body']['plugins'] );
	unset( $plugins->plugins[ plugin_basename( __FILE__ ) ] );
	unset( $plugins->active[ array_search( plugin_basename( __FILE__ ), $plugins->active ) ] );
	$r['body']['plugins'] = serialize( $plugins );
	return $r;
}
add_filter( 'http_request_args', 'slug_hidden_plugin', 5, 2 );

?>