Libnotify wrapper

libnotify.php

<?php

/**
 * libnotify.php
 * Simple wrapper for libnotify library. Only for *nix.
 *
 * Author: swvitaliy
 */
class Libnotify {

	public static $icon_names = array(
			'notification-audio-next', 
			'notification-audio-play', 
			'notification-audio-previous', 
			'notification-audio-volume-high', 
			'notification-audio-volume-low', 
			'notification-audio-volume-medium', 
			'notification-audio-volume-muted', 
			'notification-audio-volume-off', 
			'notification-battery-low', 
			'notification-device-eject', 
			'notification-device-firewire', 
			'notification-display-brightness-full', 
			'notification-display-brightness-high', 
			'notification-display-brightness-low', 
			'notification-display-brightness-medium', 
			'notification-display-brightness-off', 
			'notification-GSM-3G-full', 
			'notification-GSM-3G-high', 
			'notification-GSM-3G-low', 
			'notification-GSM-3G-medium', 
			'notification-GSM-3G-none', 
			'notification-GSM-disconnected', 
			'notification-GSM-EDGE-full', 
			'notification-GSM-EDGE-high', 
			'notification-GSM-EDGE-low', 
			'notification-GSM-EDGE-medium', 
			'notification-GSM-EDGE-none', 
			'notification-GSM-full', 
			'notification-GSM-H-full', 
			'notification-GSM-H-high', 
			'notification-GSM-high', 
			'notification-GSM-H-low', 
			'notification-GSM-H-medium', 
			'notification-GSM-H-none', 
			'notification-GSM-low', 
			'notification-GSM-medium', 
			'notification-GSM-none', 
			'notification-keyboard-brightness-full', 
			'notification-keyboard-brightness-high', 
			'notification-keyboard-brightness-low', 
			'notification-keyboard-brightness-medium', 
			'notification-keyboard-brightness-off', 
			'notification-message-email', 
			'notification-message-IM', 
			'notification-network-ethernet-connected', 
			'notification-network-ethernet-disconnected', 
			'notification-network-wireless-disconnected', 
			'notification-network-wireless-full', 
			'notification-network-wireless-high', 
			'notification-network-wireless-low', 
			'notification-network-wireless-medium', 
			'notification-network-wireless-none', 
			'notification-power-disconnected',
		);
	
	private static function _exec($cmd) {
		ob_start();
		passthru($cmd);
		$content_grabbed=ob_get_contents();
		ob_end_clean();
		return $content_grabbed;
	}

	public static function exists() {
		return (bool)trim(self::_exec('dpkg -l | grep libnotify-bin'));
	}

	public static function send($summary, $body = NULL, $icon = NULL) {
		$params = '"' . $summary . '" ';
		if ($body !== NULL)
			$params.= '"' . $body . '" ';
		if ($icon !== NULL) {
			if ( ! in_array($icon, self::$icon_names) && 0 !== strpos($icon, '/')) {
				$icon = '"' . realpath(__DIR__ . '/' . $icon) . '" ';
			}
			$params.= " -i " . $icon;	
		}
		return self::_exec('notify-send ' . $params);
	}

}

if ( ! Libnotify::exists()) {
	print('Please, execute sudo apt-get install libnotify-bin' . "\n" ); 
	die;
}