How to find Intersection of Two Sets in PHP - Step by Step Examples

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How to find Intersection of Two Sets in PHP ?

Answer

To find the intersection of two sets in PHP, you can use the array_intersect function.

✐ Examples

1 Find Intersection of Two Sets using array_intersect Function

In this example,

We create two arrays representing sets named $set1 and $set2.
We use the array_intersect function to find the intersection of $set1 and $set2.

PHP Program

<?php 
$set1 = [1, 2, 3, 4, 5];
$set2 = [4, 5, 6, 7, 8];
$intersection = array_intersect($set1, $set2);
print_r($intersection);
?>

Output

Array
(
    [3] => 4
    [4] => 5
)

2 Find Intersection of Two Sets using foreach Loop

In this example,

We create two arrays representing sets named $set1 and $set2.
We iterate through $set1 using a foreach loop and check if each element is present in $set2.
If an element is present in both sets, we add it to the $intersection array.

PHP Program

<?php 
$set1 = [1, 2, 3, 4, 5];
$set2 = [4, 5, 6, 7, 8];
$intersection = [];
foreach ($set1 as $item) {
    if (in_array($item, $set2)) {
        $intersection[] = $item;
    }
}
print_r($intersection);
?>

Output

Array
(
    [0] => 4
    [1] => 5
)

Summary

In this tutorial, we learned How to find Intersection of Two Sets in PHP language with well detailed examples.

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How to find Intersection of Two Sets in PHP - Step by Step Examples

How to find Intersection of Two Sets in PHP ?

Answer

✐ Examples

1 Find Intersection of Two Sets using array_intersect Function

PHP Program

Output

2 Find Intersection of Two Sets using foreach Loop

PHP Program

Output

Summary

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