PHP code example of zerifas / collections

1. Go to this page and download the library: Download zerifas/collections 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/ */

zerifas / collections example snippets


use Zerifas\Collections\Arr;

$arr = [
    'key1' => 'value1',
    'key2' => 'value2',
];
$item = Arr::get($arr, 'key1'); // 'value1'
$item = Arr::get($arr, 'NONE'); // null
$item = Arr::get($arr, 'NONE', 'default value'); // 'default value'


use Zerifas\Collections\Arr;

$arr = [
    'key1' => 1,
    'key2' => 2,
    'key3' => 3,
];

$filtered = Arr::filter($arr, function ($value, $key) {
    return $key !== 'key1';
});
$mapped = Arr::map($filtered, function ($value, $key) {
    return 'value ' . $value;
});
var_dump($mapped);


use Zerifas\Collections\ArrayWrapper;

$arr = new ArrayWrapper([
    'key1' => 'value1',
    'key2' => 'value2',
]);
$item = $arr->get('key1'); // 'value1'
$item = $arr->get('NONE'); // null
$item = $arr->get('NONE', 'default value'); // 'default value'


use Zerifas\Collections\ArrayWrapper;

$arr = [
    'key1' => 1,
    'key2' => 2,
    'key3' => 3,
];
$result = (new ArrayWrapper($arr))
    ->filter(function ($value, $key) {
        return $key !== 'key1';
    })
    ->map(function ($value, $key) {
        return 'value ' . $value;
    })
    ->toArray()
;

var_dump($result);


$arr = [1, 2, 3];
$result = Arr::wrap($arr)->filter(function (…) { … })->toArray();