PHP REPL is a fast sandbox for prototyping and learning core syntax in PHP. See results immediately as you type the code.

Made possible with the awesome PHP.js project by Niklas von Hertzen.

Example snippets:

Calculation

<?php
function recursion($a)
{
    if ($a < 20) {
        echo "$a\n";
        recursion($a + 1);
    }
}

recursion(17);

17
18
19

Hashmap

<?php
$mapList = array('keep' => 1, 'pass' => 2, 'fortress' => 3, 'falls' => 4, 'hall' => 5, 'stadium' => 6, 'grove' => 7, 
    '1' => 'keep', '2' => 'pass', '3' => 'fortress', '4' => 'falls', '5' => 'hall', '6' => 'stadium', '7' => 'grove');

echo '$mapList.3: ';
var_dump($mapList['3']);

$mapList.3: string(8) "fortress"

Turn based validation enclosed in a class

<?php

class Room {

    const USER_PLAYER1 = 0;
    const USER_PLAYER2 = 1;

    public $player;

    function __construct($player) {
        $this->player = $player;
    }

    public function validate($step) {
        if ($step > 6) {
            return false;
        }
        switch ($step) {
            case 1:
            case 4:
            case 5:
                if ($this->player !== self::USER_PLAYER1) {
                    return false;
                }
                break;
            case 2:
            case 3:
            case 6:
                if ($this->player !== self::USER_PLAYER2) {
                    return false;
                }
                break;
            default:
                return false;
        }
        return true;
    }
}

$x = new Room(Room::USER_PLAYER2);

$step = 3;

var_dump($x->validate($step++));
var_dump($x->validate($step++));
var_dump($x->validate($step++));

bool(true)
bool(false)
bool(false)