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@ 2013-08-21T16:25:37Z

<?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);
?>

Output for git.master, git.master_jit, rfc.property-hooks: 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 />

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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