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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:

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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.

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PHP: Tips of the Day

PHP: List all files in one directory PHP

Check this out : readdir()

This bit of code should list all entries in a certain directory:

if ($handle = opendir('.')) {

    while (false !== ($entry = readdir($handle))) {

        if ($entry != "." && $entry != "..") {

            echo "$entry\n";
        }
    }

    closedir($handle);
}

Edit: miah's solution is much more elegant than mine, you should use his solution instead.

Ref : https://bit.ly/3k9ipby