array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'en', ), 'this' => array ( 0 => 'ds-set.union.php', 1 => 'Ds\\Set::union', ), 'up' => array ( 0 => 'class.ds-set.php', 1 => 'Ds\\Set', ), 'prev' => array ( 0 => 'ds-set.toarray.php', 1 => 'Ds\\Set::toArray', ), 'next' => array ( 0 => 'ds-set.xor.php', 1 => 'Ds\\Set::xor', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/ds/ds/set/union.xml', ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); ?>
(PECL ds >= 1.0.0)
Ds\Set::union — Creates a new set using values from the current instance and another set
Creates a new set that contains the values of the current instance as well as the
values of another set
.
A ∪ B = {x: x ∈ A ∨ x ∈ B}
set
The other set, to combine with the current instance.
A new set containing all the values of the current instance as well as another set
.
Example #1 Ds\Set::union() example
<?php
$a = new \Ds\Set([1, 2, 3]);
$b = new \Ds\Set([3, 4, 5]);
var_dump($a->union($b));
?>
The above example will output something similar to:
object(Ds\Set)#3 (5) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) [4]=> int(5) }