php - How to reduce nested if-else condition? -


i lot of nested if-else condition in code. it's 34 times it. know, it's driving me crazy. please tell me how reduce it. thank you.

and here code :

if ($input_age > $age_min && $input_age <$age_max){  if ($input_heigh > $heigh_min && $input_heigh < $heigh_max){     if ($input_ds == "yes" && $ds_val=="yes" ){      //some calculation     }     else if ($input_ds == "no" && $ds_val=="yes"){      //some calculation      }     else if ($input_ds == "yes" && $ds_val=="no"){      //some calculation      }     else if ($input_ds == "no" && $ds_val=="no"){       //some calculation        } } else if ($input_heigh < $heigh_min || $input_heigh > $heigh_max){     if ($input_ds == "yes" && $ds_val=="yes" ){     //some calculation      }     else if ($input_ds == "no" && $ds_val=="yes" ){      //some calculation      }      else if ($input_ds == "yes" && $ds_val=="no"){      //some calculation      }     else if ($input_ds == "no" && $ds_val=="no" ){      //some calculation      } }

and many more if-else conditon

i suggest use switch in such cases more readable. here simple example:

switch($input_ds.$ds_val){    case 'yesyes':       //some calculations       break;    case 'yesno':       //some calculations       break;    case 'noyes':       //some calculations       break;    case 'nono':       //some calculations       break; }

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