Online PHP editor | refs for a8BCL

<?php $prices = array( 'label' => 'Price', 'count' => 5, 'attribute_code' => 'price', 'options' => array( 0 => array( 'label' => '0-100', 'value' => '0_100', 'count' => 2208, ), 1 => array( 'label' => '100-200', 'value' => '100_200', 'count' => 338, ), 2 => array( 'label' => '200-300', 'value' => '200_300', 'count' => 16, ), 3 => array( 'label' => '300-400', 'value' => '300_400', 'count' => 1, ), 4 => array( 'label' => '400-500', 'value' => '400_500', 'count' => 1, ), 5 => array( 'label' => '100-600', 'value' => '100_600', 'count' => 1, ), ) ); $counts = array_sum(array_column($prices['options'], 'count')); $values = []; foreach ($prices['options'] as $priceOption) { [$values[], $values[]] = explode('_', $priceOption['value']); } $lower = min($values); $upper = max($values); $prices['options'] = [ 'label' => $lower . '-' . $upper, 'value' => $lower . '_' . $upper, 'count' => $counts, ]; var_export($prices['options']);