how to get the respective array key value if it meets the if condition in for loop

Question

I have any array with keys and values , I want to get the value of the key ,if key is equal to certain string.

When I use this code I am getting the last key value of array. I have the flexibility to change the array structure also if we want.

$grouparray =[ "red" => "4" , "blue" =>"5" , "green" => "6"];

foreach($grouparray   as $x=>$x_value){
          if($x=blue){
              $group_id=$x_value;

          }

      }

print_r($group_id);

I want to expect $group_id = 5;

Answer 1

You have 2 problems in your if statement :

Replace if ($x=blue) { by if ($x == "blue") {

1. Blue is a string so you need some quote
2. = is to assign value, == or === are for comparaison.

But you shouldn't do a foreach loop to get your answer. If you just do $group_id = $grouparray['blue']; you will get what you want, not sure why you need a loop ?

Answer 2

your are missing quotes on blue.

$grouparray =[ "red" => "4" , "blue" =>"5" , "green" => "6"];

    foreach($grouparray as $x=>$x_value){
              if($x=="blue"){
                  $group_id=$x_value;

              }

          }

    print_r($group_id);