1. Go to this page and download the library: Download palmtree/collection 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/ */
palmtree / collection example snippets
use function Palmtree\Collection\c;
$collection = c(['foo' => 'bar', 'baz' => 'qux']);
$foo = $collection['foo'];
$collection['baz2'] = 'qux';
isset($collection['baz']); // true
unset($collection['baz']);
count($collection);
foreach ($collection as $key => $value) {
// do stuff with value and/or key
}
// find returns the first matching element
$foo = $collection->find(fn ($v) => $v === 'bar');
// filter returns a new filtered collection
$quxCollection = $collection->filter(fn ($v) => $v === 'qux');
use function Palmtree\Collection\c;
$collection = c([1, 9, 5, 3, 7, 10])
->sort()
->filter(fn ($i) $i < 10)
->values()
// returns true as every element remaining in the collection is odd
$isAllOdd = $collection->every(fn ($i) => $i % 2 !== 0);
// returns false as it was removed in our filter
$collection->contains(10);
// returns true as at least one of the elements is false
c([true, true, false, true, true])->some(fn ($v) => !$v);
/** @var Collection<int, Foo> **/
$collection = new Collection();
$collection->add(new Foo());
foreach ($collection as $foo) {
// Psalm/PHPStan and PhpStorm know that $foo is an instance of Foo here
}
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