PHP code example of zero-to-prod / arr

1. Go to this page and download the library: Download zero-to-prod/arr library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

zero-to-prod / arr example snippets


$array = [
    'Key1' => [
        'Key2' => 1
    ]
];

$new_array = Arr::mapKeys($array, function (string $key) {
    return strtolower($key);
});

$key2 = $new_array['key1']['key2']);