Switch doesn't work with numeric comparison cases

Question

Here is my code.

$value = 0;
switch($value) {
      case ( $value <= 25 ):
            $CompScore = \'low\';
            break;
      case ($value > 25         


        

Answer 1

You can "smarten up" your code with a lookup array and some simple mathematics.

Code: (Demo)

$lookup = [
    1 => 'low',
    2 => 'fair',
    3 => 'good',
    4 => 'excellent'
];

for ($i = -1; $i <= 101; ++$i) {
    echo "\n$i : " , $lookup[ceil($i / 25)] ?? $lookup[1];
}

By dividing the value by 25, then rounding up to the next whole number (with ceil()), you achieve the same result without a battery of condition statements. Using a lookup away not only keeps your code compact, it ensures that you aren't performing n checks on the same value AND it provides a clean separation between the process and the values.

If you ever decide to split the groups by 20, instead of 25, you would only need to change the 25 to 20, then add a fifth lookup value in the desired location (with the appropriate key).