PHP array group in loop and create multi dimensional array

Question

I have an associative multi dimensional array as below

$data = array();
$data = Array ( 
    [0] => Array ( [class] => 1styear [branch] => IT [Exam]         


        

Answer 1

Maybe something like this (not tested)?

$newData = [];

foreach ($data as $row) {
   $student = [
      'student name' => $row['student name'],
      'Bio' => $row['Bio']
   ];
   $newData[$row['class']][$row['branch']][$row['exam']][] = $student;
}