How to use the OpenWeatherMap API using PHP ?

e.g city name = Delhi , state code = IN, country code = IN

   
 
http://api.openweathermap.org/data/2.5/weather?q={city name},{state code},{country code}&appid={API key}

As mentioned above let’s fill the URL with required data, e.g shown below:

   
 
http://api.openweathermap.org/data/2.5/weather?q=Delhi,IN,IN&appid=d62ca415a6b61d8927e6d87b8c42

The format of the data is given in the following format:

mode=json (default)

mode=xml
If you want to change the data format then you need to add the mode in the URL as “http://api.openweathermap.org/data/2.5/weather?q=Delhi,IN,IN&mode=xml&appid= d62ca415a6b61d8927e6d87b8c42″, it will return the data in XML format.

Create PHP file and write the following code of openweathermap API

Now, we have a working URL that helps to fetch the data using PHP, Let’s move on PHP part. First, we need to create a function to fetch the data through these URL, the function used cURL as shown below using in PHP code:

   
 
function WeatherUrl($url){
		$cn = curl_init();
		curl_setopt($cn, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($cn, CURLOPT_URL, $url);    // get the contents using url
		$weatherdata = curl_exec($cn); // execute the curl request
		curl_close($cn); //close the cURL
		return $weatherdata;
}
					

Create a variable named $url, and assign the URL which created before, then call the WeatherUrl() function with argument $url to get the data as mentioned below:

   
 
$url="http://api.openweathermap.org/data/2.5/weather?q=Delhi,IN,IN&units=metric&appid=d62ca415a6b61d8927e6d87b8c420";
$response=WeatherUrl($url);
					

To extract the data from json_file we need to create a JSON object, to do this we need to call the json_decode function and pass the $response.

   
 
$data = json_decode($response);
$temp = $data->main->temp . '℃';
$minimum_temp = $data->main->temp_min . '℃';
$maximum_temp = $data->main->temp_max . '℃';
$feels_like = $data->main->feels_like . '℃';
$pressure = $data->main->pressure . '℃';
$humidity = $data->main->humidity . '℃';
					

Now, use echo to print the data as :

   
 
echo '
Temperature : '. $temp;
echo '
Minimum Temperature : '. $minimum_temp;
echo '
Maximum Temperature : '. $maximum_temp;
echo '
Feels Like : '. $feels_like;
echo '
Pressure : '. $pressure;
echo '
Humidity : '. $humidity;
					

Output

Temperature : 14.05℃
Minimum Temperature : 12℃
Maximum Temperature : 16.11℃
Feels Like : 12.49℃
Pressure : 1014℃
Humidity : 94℃

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