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@ 2018-05-05T23:56:47Z

<?php
    class Stack
    {
        public $maxSize;
        public $items = [];
        public $top = 0;


        public function __construct(array $stack, $maxSize){
            $this->items = $stack;
            $this->maxSize = $maxSize;
        }

        public function push($item){
            if ($this->top === $this->maxSize){
                throw new Exception("Stack overflow");
            }
            $this->items[$this->top] = $item;
            $this->top++;
        }

        public function pop(){
            if ($this->top === 0){
                throw new Exception("Stack underflow");
            }
            $this->top--;
            return $this->items[$this->top];
        }
    }
    
    $items = [1, 2, 3, 4, 5];
    $maxSize = 10;
    $stack = new Stack($items, $maxSize);
    $stack->push(6);
    var_dump($stack);
    
    $stack->pop();
    var_dump($stack);

Output for git.master, git.master_jit, rfc.property-hooks: object(Stack)#1 (3) { ["maxSize"]=> int(10) ["items"]=> array(5) { [0]=> int(6) [1]=> int(2) [2]=> int(3) [3]=> int(4) [4]=> int(5) } ["top"]=> int(1) } object(Stack)#1 (3) { ["maxSize"]=> int(10) ["items"]=> array(5) { [0]=> int(6) [1]=> int(2) [2]=> int(3) [3]=> int(4) [4]=> int(5) } ["top"]=> int(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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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