Laravel Array Environment Variable

.env

MY_KEY=key1|value1,key2|value2

sample.php

<?php
//Save as config/sample.php

return [
  'key' => collect(explode(',', env('MY_KEY', '')))->pipe(function($collection) {
        $arr = [];
        foreach ($collection as $item) {
            if (strpos($item, '|') === false) {
                continue;
            }
            list($k, $v) = explode('|', $item);
            $arr[$k] = $v;
        } 
        return collect($arr);
    })->toArray()  
  
];

usage.php

<?php

$data = config('sample.key');

/*
 * Returns
 * ["key1" => "value1", "key2" => "value2"]