PHP code example of jakewhiteley / php-sets

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

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

    

jakewhiteley / php-sets example snippets

use PhpSets\Set;

$set = new Set(1, 2, 3);
$emptySet = new Set();

// $set contains [1, 2, 3] as duplicates are not stored
$set = new Set(1, 2, 1, 3, 2);

$set = new Set([1, 2, 1, 3, 2]);

$array = [1, 2, 1, 3, 2];
$set = new Set(...$array);

// create empty Set
$set = new Set(); 

$set->add('a');
// $set => ['a']

$set->add(1);
// $set => ['a', 1]

$set = new Set();

$set[] = 1;
$set[] = 'foo';
// $set => [1, 'foo']


// You can also replace values by key, provided the new value is unique within the Set
$set[0] = 2;
// $set => [2, 'foo']

// If a key is not currently in the array, the value is appended to maintain insertion order
$set[4] = 'foo';
// $newSet => [2, 'foo', 'foo']

$set = new Set(1, 2, 3);

$set->delete(2);
// $set => [1, 3]

$set->clear();
// $set => []

$set = new Set(1, 2, 3);

unset($set[0]);
// $set => [2, 3]

$set = new Set('a', [1, 2], 1.0);

$set->has('a');      // true
$set->has([1, 2]);   // true
$set->has(1);        // false
$set->has([1, '2']); // false
$set->has('foo');    // false

$set = new Set(1, 2, 3);

echo $set->count(); // 3

$set = new Set(1, 2);

foreach ($set as $val) {
    print($val);
}

$iterator = $set->entries();

while ($iterator->valid()) {
    echo $iterator->current();
    $iterator->next();
}

function cb($item, $parameter) {
  echo $item * $parameter;
}

$set = new Set(1, 2);

$set->each('cb', 10);
// prints 10 20

$a = new Set(1, 2, 3);
$b = new Set(2, 3, 4);

$merged = $a->union($b);

print_r($merged->values()); // [1, 2, 3, 4]

$a = new Set(1, 2, 3, 4);
$b = new Set(3, 4, 5, 6);

print_r($a->difference($b)->values()); // [1, 2]
print_r($b->difference($a)->values()); // [5, 6]

$a = new Set(1, 2, 3, 4);
$b = new Set(3, 4, 5, 6);

print_r($a->symmetricDifference($b)->values()); // [1, 2, 5, 6]

$a = new Set(1, 2, 3);
$b = new Set(2, 3, 4);

$intersect = $a->intersect($b);

print_r($intersect->values()); // [2, 3]

$a = new Set(1, 2, 3);
$b = new Set(2, 3);

var_Dump($b->isSupersetOf($a)); // true
var_Dump($a->isSupersetOf($b)); // false

$set1 = Set(1, 2, 3);
$set2 = Set(3, 4, 5);
$set2 = Set(5, 1, 6);

$set_union = Set::familyUnion([$set1, $set2]); // [1, 2, 3, 4, 5, 6]

$set1 = Set(1,2,3);
$set2 = Set(3,4,5);
$set_family = [ $set1, $set2 ];
$set_intersection = Set::familyIntersection($set_family);