ProgramGuruTo create a Set of Sets in PHP, you can use arrays to represent sets. You create individual sets as arrays and then add them to another array.
In this example,
$set1, $set2, and $set3. We add the elements 1, 2, 3 to $set1, 4, 5, 6 to $set2, and 7, 8, 9 to $set3.$setOfSets and add $set1, $set2, and $set3 to it. This nests the three sets within a single array.$setOfSets using a foreach loop. Within the loop, we print each individual set to the standard output.<?php
$set1 = [1, 2, 3];
$set2 = [4, 5, 6];
$set3 = [7, 8, 9];
$setOfSets = [$set1, $set2, $set3];
foreach ($setOfSets as $set) {
print_r($set);
}
?>Output:
Array
(
[0] => 1
[1] => 2
[2] => 3
)
Array
(
[0] => 4
[1] => 5
[2] => 6
)
Array
(
[0] => 7
[1] => 8
[2] => 9
)
In this example,
$setA, $setB, and $setC. We add the elements "apple", "banana", "cherry" to $setA, "dog", "elephant", "fox" to $setB, and "grape", "honeydew", "kiwi" to $setC.$setOfStringSets and add $setA, $setB, and $setC to it. This nests the three sets within a single array.$setOfStringSets using a foreach loop. Within the loop, we print each individual set to the standard output.<?php
$setA = ["apple", "banana", "cherry"];
$setB = ["dog", "elephant", "fox"];
$setC = ["grape", "honeydew", "kiwi"];
$setOfStringSets = [$setA, $setB, $setC];
foreach ($setOfStringSets as $set) {
print_r($set);
}
?>Output:
Array
(
[0] => apple
[1] => banana
[2] => cherry
)
Array
(
[0] => dog
[1] => elephant
[2] => fox
)
Array
(
[0] => grape
[1] => honeydew
[2] => kiwi
)
In this tutorial, we learned How to create a Set of Sets in PHP language with well detailed examples.