php - Creating a level of numbers for a pass scoring system -

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i have set of values json_decode , number being row 'pass_levels' , letter being row 'pass_level_name'.

90 -> a, 80 -> b, 70 -> c

i have score if above or below number want show letter. if score 85 shows b. problem have code below if score above of numbers shows c regardless.

i know if > 90 echo variables not set , amount of variables change. change , variables might be:

a -> 95, b -> 90, c -> 80, d -> 70, e -> 60, f -> 50.

in circumstances scored below lowest number fail.

$score = $row['score'];   $levels = json_decode($row['pass_levels']); $levels_name = json_decode($row['pass_level_name']);  foreach(array_combine($levels, $levels_name) $level => $level_name){                  }  if($score >= $level){ echo $score.'% '.$level_name; } else { echo "fail"; }

i hope i've explained enough me.

thanks


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