<?php
$simpsons = array();
$simpsons[0] = array("name"=>"Abe","parent"=>-1);
$simpsons[1] = array("name"=>"Homer","parent"=>0); // Homer's parent is Abe
$simpsons[2] = array("name"=>"Bart","parent"=>1); // Bart's parent is Homer
$simpsons[3] = array("name"=>"Lisa","parent"=>1); // Lisa's parent is Homer
$simpsons[4] = array("name"=>"Maggie","parent"=>1); // Maggie's parent is Homer
function get_children($parent) {
global $simpsons;
foreach ($simpsons as $index=>$onesimpson) {
if ($onesimpson["parent"]==$parent) {
echo "$onesimpson[name] is a child of ".$simpsons[$parent]["name"].".<br />\n";
get_children($index);
}
else
echo "$onesimpson[name] is NOT a child of ".$simpsons[$parent]["name"].".<br />\n";
}
}
get_children(0);
?>
Abe is NOT a child of Abe.<br />
Homer is a child of Abe.<br />
Abe is NOT a child of Homer.<br />
Homer is NOT a child of Homer.<br />
Bart is a child of Homer.<br />
Abe is NOT a child of Bart.<br />
Homer is NOT a child of Bart.<br />
Bart is NOT a child of Bart.<br />
Lisa is NOT a child of Bart.<br />
Maggie is NOT a child of Bart.<br />
Lisa is a child of Homer.<br />
Abe is NOT a child of Lisa.<br />
Homer is NOT a child of Lisa.<br />
Bart is NOT a child of Lisa.<br />
Lisa is NOT a child of Lisa.<br />
Maggie is NOT a child of Lisa.<br />
Maggie is a child of Homer.<br />
Abe is NOT a child of Maggie.<br />
Homer is NOT a child of Maggie.<br />
Bart is NOT a child of Maggie.<br />
Lisa is NOT a child of Maggie.<br />
Maggie is NOT a child of Maggie.<br />
Bart is NOT a child of Abe.<br />
Lisa is NOT a child of Abe.<br />
Maggie is NOT a child of Abe.<br />
Abe is NOT a child of Abe.<br />
Homer is a child of Abe.<br />
Abe is NOT a child of Homer.<br />
Homer is NOT a child of Homer.<br />
Bart is a child of Homer.<br />
Abe is NOT a child of Bart.<br />
Homer is NOT a child of Bart.<br />
Bart is NOT a child of Bart.<br />
Lisa is NOT a child of Bart.<br />
Maggie is NOT a child of Bart.<br />