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@ 2021-01-25T20:56:47Z

<?php 

const URLS = [
    "http://site.com/",
    "http://site.com/save",
    "http://site.com/save/results",
    "http://site.com/save/results/path",
    "http://site.com/path/save/results",
    "http://site.com/save/path",
    "http://site.com/path/results",
    "http://site.com/Crawler4",
    "http://site.com/Crawler",
];

$seen = [];
$siteStructure = [];

foreach (URLS as $url)
{
    ['scheme' => $scheme, 'host' => $host, 'path' => $path] = parse_url($url);

	$realm = $scheme . '://' . $host;
    $siteStructure[$realm] = isset($siteStructure[$realm]) ? $siteStructure[$realm]: [];
    $current = &$siteStructure[$realm];

	$pathEls = preg_split('/[^a-zA-Z0-9]+/', $path, 0, PREG_SPLIT_NO_EMPTY);

	foreach ($pathEls as $el)
	{
	    $current[$el] = isset($current[$el]) ? $current[$el] : [];
	    $current = &$current[$el];
	}
	
	unset($current);
}

var_dump($siteStructure);

Output for git.master, git.master_jit, rfc.property-hooks: array(1) { ["http://site.com"]=> array(4) { ["save"]=> array(2) { ["results"]=> array(1) { ["path"]=> array(0) { } } ["path"]=> array(0) { } } ["path"]=> array(2) { ["save"]=> array(1) { ["results"]=> array(0) { } } ["results"]=> array(0) { } } ["Crawler4"]=> array(0) { } ["Crawler"]=> array(0) { } } }

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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