php - Comparing array values in nested foreach -

i've 2 arrays:

$rooms = [1,2,3,4,5,6,7,8,9]; $reserved_rooms = [4, 7];  

i print array this:

1 2 3 room 4 reserved 5 6 room 7 reserved 

her code:

$rooms = [1,2,3,4,5,6,7,8,9]; $reserved_rooms = [4, 7];   foreach($rooms $key=>$val){     foreach($reserved_rooms $val2){         if($val == $val2){             echo $val2." room reserved";         }            else             echo $val."<br>";     } } 

the result is:

1 1 2 2 3 3 4 room reserved4 5 5 6 6 7 7 room reserved8 8 9 9 

you need move echo outside loop.

$rooms = [1,2,3,4,5,6,7,8,9]; $reserved_rooms = [4, 7];   foreach($rooms $key=>$val){     $isreserved = false; // add      foreach($reserved_rooms $val2){         if($val == $val2){             $isreserved = true;             break; // reserved, no need check other values         }     }      if ($isreserved) { // decide whether reserved or not         echo $val." room reserved";     } else {         echo $val."<br>";     } }