是否可以在PHP中使用多个键引用相同的值？

Question

I'm wondering if it's possible to clean this code up a bit...I have an array of car categories and each key is a vehicle code. There are several vehicle codes that I am mapping to a particular category (ex. Small, Medium, Large). I've asked a similar question previously, but I'm not sure if it was clear so I simplified my question. I'd like to keep this similar format, but wondering if it's possible to do something like this (so that I don't have to write "Small" more than once):

        $categories = [
            'L...' => 'Luxury',
            'W...' => 'Luxury',
            'X...' => 'Specialty',

            'CB..', 'CC..', 'CD..' => 'Small' 
            // Is something like this possible to do within the $categories array ?
        ];

Current Code:

        $categories = [
            'L...' => 'Luxury',
            'W...' => 'Luxury',
            'X...' => 'Specialty',

            'CB..' => 'Small',
            'CC..' => 'Small',
            'CD..' => 'Small',
            'DB..' => 'Small',
            'DC..' => 'Small',
            'DD..' => 'Small',
            'EB..' => 'Small',
            'EC..' => 'Small',
            'ED..' => 'Small',
            'HB..' => 'Small',
            'HC..' => 'Small',
            'HD..' => 'Small',
            'MB..' => 'Small',
            'MC..' => 'Small',
            'MD..' => 'Small',
            'NB..' => 'Small',
            'NC..' => 'Small',
            'ND..' => 'Small',

            'IB..' => 'Medium',
            'IC..' => 'Medium',
            'ID..' => 'Medium',
            'JB..' => 'Medium',
            'JC..' => 'Medium',
            'JD..' => 'Medium',
            'RB..' => 'Medium',
            'RC..' => 'Medium',
            'RD..' => 'Medium',
            'SB..' => 'Medium',
            'SC..' => 'Medium',
            'SD..' => 'Medium',

            'FB..' => 'Large',
            'FC..' => 'Large',
            'FD..' => 'Large',
            'GB..' => 'Large',
            'GC..' => 'Large',
            'GD..' => 'Large',
            'PB..' => 'Large',
            'PC..' => 'Large',
            'PD..' => 'Large',
            'UB..' => 'Large',
            'UC..' => 'Large',
            'UD..' => 'Large',

            '.E..' => 'Sports', // Coupe
            '.F..' => 'SUV',
            '.G..' => 'SUV', // Crossover
            '.H..' => 'RV', // Motor Home
            '.J..' => 'Off-Road Vehicle',
            '.K..' => 'Commercial',
            '.L..' => 'Luxury', // Limousine
            '.M..' => 'Van', // Monospace
            '.N..' => 'Convertible', // Roadster
            '.P..' => 'Pickup Truck',
            '.Q..' => 'Pickup Truck',
            '.R..' => 'RV',
            '.S..' => 'Sports',
            '.T..' => 'Convertible',
            '.V..' => 'Van',
            '.W..' => 'Wagon',
            '.X..' => 'Specialty',
            '.Z..' => 'Specialty',

            '...C' => 'Electric',
            '...E' => 'Electric',
            '...H' => 'Hybrid',
            '...I' => 'Hybrid'
        ];

Answer 1

You can use array_fill_keys like

<?php

$aKeys = ['A','B','C'];

$aResult = array_fill_keys ( $aKeys , 'small' );

print_r($aResult);