PHP Class to Get Weather Data Using OpenWeatherMap API

By Faruque Ahamed Mollick

OpenWeatherMap is a popular weather data API provider from where you can get the weather data for current weather and also weather forecast data for a particular place or city or town. They provide weather data in JSON and XML format.

Here in this post, I am going to give you a complete PHP class code from where you can get weather data easily from any place.

• Getting weather data from OpenWeatherMap API using PHP

PHP class for getting weather data

Below is the given PHP class code which I have named as weather_class.php:

<?php
Class APIs{
  protected $owapi = "YOUR_API_KEY";
}
Class Currentweather Extends APIs{
  private $jsonfile;
  private $jsondata;
  private $temp;
  private $humidity;
  private $pressure;
  private $visibility;
  private $description;
  private $windspeed;
  private $winddir;
  private $iconcode;
  private $coordlon;
  private $coordlat;
  private $cityname;
  private $countrycode;
  private $sunrise;
  private $sunset;
  private $cloudsall;
  
  private function jsondata($url) {
    $this->jsonfile = file_get_contents($url);
    $this->jsondata = json_decode($this->jsonfile);
    return $this->jsondata;
  }
  
  
  //location for current weather
  public function locationbycity($city, $country) {
    $currenturl = "http://api.openweathermap.org/data/2.5/weather?q=". str_replace(' ', '%20', $city) .",". str_replace(' ', '%20', $country) ."&units=metric&appid=". $this->owapi ."";
      return $currenturl;
  }
  
  // Get current temperature
  public function temperature($url) {
    $this->temp = $this->jsondata($url)->main->temp;
    return $this->temp;
  }
  // Get current humidity
  public function humidity($url) {
    $this->humidity = $this->jsondata($url)->main->humidity;
    return $this->humidity;
  }
  // Get current pressure
  public function pressure($url) {
    $this->pressure = $this->jsondata($url)->main->pressure;
    return $this->pressure;
  }
  // Get current visibility
  public function visibility($url) {
    $this->visibility = $this->jsondata($url)->visibility;
    return $this->visibility;
  }
  //Get current weather description
  public function description($url) {
    $this->description = $this->jsondata($url)->weather[0]->description;
    return $this->description;
  }
  // Get wind speed
  public function windspeed($url) {
    $this->windspeed = $this->jsondata($url)->wind->speed;
    return $this->windspeed;
  }
  //Get wind direction
  public function winddir($url) {
    $this->winddir = $this->jsondata($url)->wind->deg;
    return $this->winddir;
  }
  //Get icon code
  public function iconcode($url) {
    $this->iconcode = $this->jsondata($url)->weather[0]->icon;
    return $this->iconcode;
  }
  // Get country name
  public function cityname($url) {
    $this->cityname = $this->jsondata($url)->name;
    return $this->cityname;
  }
  //Get city name
  public function countrycode($url) {
    $this->countrycode = $this->jsondata($url)->sys->country;
    return $this->countrycode;
  }
  //Get sunrise time
  public function sunrise($url) {
    $this->sunrise = $this->jsondata($url)->sys->sunrise;
    return $this->sunrise;
  }
  //Get sunset
  public function sunset($url) {
    $this->sunset = $this->jsondata($url)->sys->sunset;
    return $this->sunset;
  }
  //Get cloudsall
  public function cloudsall($url) {
    $this->cloudsall = $this->jsondata($url)->clouds->all;
    return $this->cloudsall;
  }
}
?>

In the above code, you have to change “YOUR_API_KEY” into your own OpenWeatherMap API key so that it will be ready to use. You can get it from openweathermap.org.

• How to parse JSON file in PHP?

How to use the above PHP class to get weather details?

Now I am going to show you the usage of the above PHP class. To use it you can create a PHP file where you just have to include the class. below is the demo example code:

include "weather_class.php";
if(isset($_GET['city']) && isset($_GET['country']))
{
  
$getcity = $_GET['city'];
$getcountry = $_GET['country'];
$location = "'". $getcity ."', '". $getcountry ."'";

$kolkatadata = new Currentweather;
//$temperature = $kolkatadata->temperature($kolkatadata->locationbycity('Kolkata', 'In'));
$temperature = $kolkatadata->temperature($kolkatadata->locationbycity($getcity, $getcountry));
$humidity = $kolkatadata->humidity($kolkatadata->locationbycity($getcity, $getcountry));
$pressure = $kolkatadata->pressure($kolkatadata->locationbycity($getcity, $getcountry));
$windspeed = $kolkatadata->windspeed($kolkatadata->locationbycity($getcity, $getcountry));
$winddir = $kolkatadata->winddir($kolkatadata->locationbycity($getcity, $getcountry));
$cityname = $kolkatadata->cityname($kolkatadata->locationbycity($getcity, $getcountry));
$countrycode = $kolkatadata->countrycode($kolkatadata->locationbycity($getcity, $getcountry));
$description = $kolkatadata->description($kolkatadata->locationbycity($getcity, $getcountry));
$visibility = $kolkatadata->visibility($kolkatadata->locationbycity($getcity, $getcountry));
$sunrise = $kolkatadata->sunrise($kolkatadata->locationbycity($getcity, $getcountry));
$sunset = $kolkatadata->sunset($kolkatadata->locationbycity($getcity, $getcountry));
$cloudsall = $kolkatadata->cloudsall($kolkatadata->locationbycity($getcity, $getcountry));

}
else {
  echo "URL value not set";
}

In the above code, we can get weather data for a particular place. Suppose you have saved the above code in a file called index.php. Then you just have to pass the location in this way via URL – index.php?city=Kolkata&country=In. Then you can display each weather data by using PHP echo.