w3resource
php Programming Exercies

PHP Array Exercises : Set union of two arrays

PHP Array: Exercise-48 with Solution

Write a PHP function to set union of two arrays.

Sample Solution:

PHP Code:

<?php
function array_union($x, $y)
   { 
      $aunion=  array_merge(
            array_intersect($x, $y),
            array_diff($x, $y),     
            array_diff($y, $x)      
        );
        return $aunion;
   }
$a = array(1, 2, 3, 4);
$b = array(2, 3, 4, 5, 6);
print_r(array_union($a, $b));
?>

Sample Output:

Array                                                       
(                                                           
    [0] => 2                                                
    [1] => 3                                                
    [2] => 4                                                
    [3] => 1                                                
    [4] => 5                                                
    [5] => 6                                                
) 

Flowchart:

Flowchart: PHP - Set union of two arrays

PHP Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a PHP function to get an array with the first key and value.
Next: Write a PHP script to get an array containing all the entries of an array which have the keys that are present in another array.

What is the difficulty level of this exercise?



New Content: Composer: Dependency manager for PHP, R Programming