Array_intersect, array_diff, and array_merge examples

gistfile1.php

<?php

    $toppings1 = array("Pepperoni", "Cheese", "Anchovies", "Tomatoes");
    $toppings2 = array("Ham", "Cheese", "Peppers");
    $inttoppings = array_intersect($toppings1, $toppings2);
    $difftoppings = array_diff($toppings1, $toppings2);
    $bothtoppings = array_merge($toppings1, $toppings2);
    
    echo '<p> array_intersect returns an array consisting of varables that both original array had in common.</p>';
    var_dump($inttoppings);
    echo '<p> array_diff compares two arrays and returns the values from array1 that are not in array 2.</p>';
    var_dump($difftoppings);
    echo '<p> array_merge simply combines the two array together into one new array.</p>';
    var_dump($bothtoppings);

?>