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<?php $rows = [ ["Reservation" => ["adult_price" => 2000, "adult_count" => 2]], ["Reservation" => ["adult_price" => 1000, "adult_count" => 1]], ["Reservation" => ["adult_price" => 500, "adult_count" => 4]], ["Reservation" => ["adult_price" => 2000, "adult_count" => 3]], ["Reservation" => ["adult_price" => 2000, "adult_count" => 2]], ["Reservation" => ["adult_price" => 1000, "adult_count" => 1]], ["Reservation" => ["adult_price" => 500, "adult_count" => 4]], ["Reservation" => ["adult_price" => 2000, "adult_count" => 3]], ]; $result = []; foreach ($rows as $row) { if (!isset($result[$row['Reservation']['adult_price']])) { $result[$row['Reservation']['adult_price']] = $row; } else { $result[$row['Reservation']['adult_price']]['Reservation']['adult_count'] += $row['Reservation']['adult_count']; } } var_export(array_values($result));
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1
array ( 0 => array ( 'Reservation' => array ( 'adult_price' => 2000, 'adult_count' => 10, ), ), 1 => array ( 'Reservation' => array ( 'adult_price' => 1000, 'adult_count' => 2, ), ), 2 => array ( 'Reservation' => array ( 'adult_price' => 500, 'adult_count' => 8, ), ), )
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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