moha/hooks/scripts/rdc_temperature_int_ext.php

<?php
// script to prevent when exterior temperature become inferior or superior to interior one
class rdc_temperature_int_ext extends hook
{
	public $hookName = "rdc_wc_eclairage";
	public $active = true;			//enable/disable hook (true => enabled)

	protected $devicelist = array(
				METEO=> "tempc",
				);

	// callback fonction. Is called with these 4 parameters
	public function callBack(&$device, $property, $value)
	{
		global $indexDevices;
		static $status = 0;
		if ($device->properties["indoortempc"]["value"] > $value and $status === 1)
		{
			$status = 0;
			logger(ALERT, _("Indoor temperature is superior to outdoor one"));
		}elseif ($device->properties["indoortempc"]["value"] < $value and $status === 0)
		{
			$status = 1;
			logger(ALERT, _("Indoor temperature is inferior to outdoor one"));
		}
		logger (INFO, sprintf(_("%s: notification received from MQTT from %s => parameter: %s value: %s"), $this->hookName, $device->friendlyName, $property, bool2string($value)), __FILE__ . ":" . __LINE__);
	}
}

$hooks["rdc_temperature_int_ext"] = new rdc_temperature_int_ext();
?>