Online PHP editor | refs for GTZPD

<?php // Capture the list of taste observations across analyses and phases of analysis $taste_observations = array(); // Temporary test data for Stack Overflow Question $taste_observations[] = [ 'analyst' => 'Ken', 'phase' => 'Entrance', 'taste' => 'Sweet', 'intensity' => 1 ]; $taste_observations[] = [ 'analyst' => 'Ken', 'phase' => 'Entrance', 'taste' => 'Spicy', 'intensity' => 1 ]; $taste_observations[] = [ 'analyst' => 'Ken', 'phase' => 'Center', 'taste' => 'Sweet', 'intensity' => 2 ]; $taste_observations[] = [ 'analyst' => 'Bob', 'phase' => 'Entrance', 'taste' => 'Savory', 'intensity' => 1 ]; $taste_observations[] = [ 'analyst' => 'Bob', 'phase' => 'After', 'taste' => 'Sweet', 'intensity' => 2, ]; $taste_summary = []; foreach($taste_observations as $taste_observation) { $taste_summary[$taste_observation['taste']] = [ 'taste' => $taste_observation['taste'], 'count' => 1 + ($taste_summary[$taste_observation['taste']]['count'] ?? 0), 'max' => max($taste_summary[$taste_observation['taste']]['max'] ?? 0, $taste_observation['intensity']), 'sum' => $taste_observation['intensity'] + ($taste_summary[$taste_observation['taste']]['sum'] ?? 0) ]; } ksort($taste_summary); $taste_summary = array_values($taste_summary); print_r($taste_summary);