Question

In our Learning Management System someone in their infinite wisdom decided to keep non-standardized grades. As a result we have a table similar to this:

• Assignment 1 – 100
• Assignment 2 – 80
• Assignment 3 – 10/20
• Assignment 4 – 68
• Assignment 5 – 8/10

As you can see we have a mixture of percentages and fractions. What i’d like to do is check if the grade is a fraction i.e. 10/20 and if so convert it out to a percentage. Are there any built in php functions for either action? I was thinking of doing a strpos(‘/’/, $grade); to check if it was a fraction but is there a cleaner way? Additionally to break up the fraction and convert it to a decimal my initial thought was to explode the fraction grade on a / and do (array[1] * 100) / array[2].

Is there any better solution than the one i am thinking?

Answer 1

if(is_nan($grade)) {
     if(strpos('/',$grade) !== false) {
          $numbers = explode($grade,'/');
          $percent = (((int)$numbers[0] / (int)$numbers[1])*100).'%';
     } else {
          echo "Not a valid grade!";
     }
} else { 
     $percent = $grade.'%';
}

i believe that should work

dont have to deal with pesky regex either