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']);



// Set value with dot notation
$array = ['a' => ['b' => 1]];
$new_array = Arr::set($array, 'a.b', 2); // ['a' => ['b' => 2]]

// Merge arrays
$array1 = ['a' => 1];
$array2 = ['b' => 2];
$new_array = Arr::set($array1, $array2); // ['a' => 1, 'b' => 2]

// Use a callback
$array = ['a' => 1];
$new_array = Arr::set($array, function($array) {
    $array['b'] = 2;
    return $array;
}); // ['a' => 1, 'b' => 2]

// Empty string key does not modify the array
$array = ['a' => 1];
$new_array = Arr::set($array, ''); // ['a' => 1]