使用php缩短if else语句

Question

i have a question about shorten if else statement. I am trying to make a weather application using OpenWeatherMap api. But i don't like those icons. I want to change the icons like this:

if($desc == 'clear sky'){
  $weather_icon = 'clear_sky.png';
}else
if($desc == 'few clouds'){
  $weather_icon = 'few_clouds.png';
}else
if($desc == 'scattered clouds'){
  $weather_icon = 'scattered_clouds.png';
}else
if($desc == 'broken clouds'){
  $weather_icon = 'broken_clouds.png';
}else
if($desc == ''){
  .....
}
......

So my question is how can i do this with shorten if else or do you have any idea to use different thinks?

Answer 1

Arrays are the glue that holds the universe together (if the universe is written in PHP).

$map = [
   'clear sky' => "clear_sky.png",
   'few clouds' =>"few_clouds.png", 
   'scattered clouds' => 'scattered_clouds.png'
   'broken clouds' => 'broken_clouds.png'
];

if (isset($map[$desc])) {
   $weather_icon = $map[$desc];
} 

This allows you to also map unrelated words with image names as well as multiple words to the same image.