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run code in 300+ PHP versions simultaneously

@ 2016-11-09T17:07:05Z

<?php

class Deck{

  public  $cards = array();

  //creates an instance of a deck of cards (works)

  public function __construct(){
    $values =array('2','3','4','5','6','7','8','9','10','J','Q','K','A');
    $suits =array('Diamond','Club','Heart','Spade');
      foreach ($suits as $suit) {
         foreach($values as $value){
           $this->cards[] = "$value of $suit's";
         }
      }
  }

	public function numberOfDecks($number){

		$cards = $this->cards;

		$this->number = $number;
		for($i = 0 ; $i < $number; $i++){
			$this->cards = array_merge($this->cards, $cards);
		}

	}
}



$deck = new Deck();//works as expected

// how many cards are intially constructed?
echo "count of cards in new deck: " . count($deck->cards) . "\n<br/>\n";

// add 3 more decks of cards
$deck->numberOfDecks(3);//trouble 
echo "count of cards after adding 3 decks: " . count($deck->cards);

// $shuffled = shuffle($deck->cards);//works as expected
// var_dump($deck);

Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: count of cards in new deck: 52 <br/> Deprecated: Creation of dynamic property Deck::$number is deprecated in /in/h3Sv5 on line 23 count of cards after adding 3 decks: 208
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 count of cards in new deck: 52 <br/> Deprecated: Creation of dynamic property Deck::$number is deprecated in /in/h3Sv5 on line 23 count of cards after adding 3 decks: 208
Output for 5.6.0 - 5.6.38, 7.0.0 - 7.0.31, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28: count of cards in new deck: 52 <br/> count of cards after adding 3 decks: 208

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