exercise-3.php

Recursive function exercise

<?php
    echo '<h3>Family Tree Exercise</h3>';
    $family8 = ['member1' => 'Aethelflaed', 'member2' => '???', 'offspring' => []];
    $family7 = ['member1' => 'Edward', 'member2' => '???', 'offspring' => []];
    $family6 = ['member1' => 'Aethelwold', 'member2' => '???', 'offspring' => []];
    $family5 = ['member1' => 'Athelstan', 'member2' => '???', 'offspring' => []];
    $family4 = ['member1' => 'Alfred', 'member2' => 'Ealswith', 'offspring' => [$family7, $family8]];
    $family3 = ['member1' => 'Aethelred', 'member2' => 'Wulfthryth', 'offspring' => [$family6]];
    $family2 = ['member1' => 'Aethelwulf', 'member2' => 'Osburga', 'offspring' => [$family3, $family4, $family5]];
    $family1 = ['member1' => 'Egbert', 'member2' => 'Redburga', 'offspring' => [$family2]];
    $familyTree = $family1;

    function PrintFamilyTree(array $family)
    {
        $member1 = $family['member1'];
        $member2 = $family['member2'];
        echo "Family $member1 - $member2:<br/>";
        
        if(!empty($family['offspring']))
        {
            echo "Offspring: ";
            foreach ($family['offspring'] as $offspring) 
            {
                echo $offspring['member1']." ";
            }

            echo "<br/><br/>";

            foreach ($family['offspring'] as $offspring) 
            {
                PrintFamilyTree($offspring);
            }
        }
        else
        {
            echo "$member1 Offspring: none<br/><br/>";
        }
    }

    PrintFamilyTree($familyTree);
?>