Online PHP editor | rfc for KXvBs

@ 2020-02-20T10:24:20Z

<?php

$combos = [
    //Test case 1: normally written.
    ['FirstClass_1', 'FirstClass_2', 'FirstClass_3'],
    //Test case 2: swapped 'l' with 'C' inside 'FirstClass_1' to make it 'FirstlCass1'.
    ['FirstlCass_1', 'FirstClass_2', 'FirstClass_3'],
    //Test case 3: swapped positions.
    ['FirstClass_2', 'FirstClass_3', 'FirstlCass_1']
];


class Node{
	public $val;
	public $children;
	public $end_of_data;
	function __construct($val){
		$this->val = $val;
		$this->children = [];
		$this->end_of_data = false;
	}
}


class DataManager{
	private $root;
	private const INSERTED = 1;
	private const EXISTS   = 2;
	function __construct(){
		$this->root = new Node('~');
	}

	public function putIfAbsent($data){
		sort($data); // to make different combinations/anagrams of same values as one 
		$node = $this->root;
		$status = self::EXISTS;

		foreach($data as $value){
			if(!isset($node->children[$value])){
				$node->children[$value] = new Node($value);
				$status = self::INSERTED;
			}

			$node = $node->children[$value];
		}

		$node->end_of_data = true;
		return $status;
	}
}



$o = new DataManager();

foreach($combos as $combo){
	var_dump($o->putIfAbsent($combo));
}

Output for git.master, git.master_jit, rfc.property-hooks: int(1) int(1) int(2)

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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