sapi/phpdbg/test.php

<?php
if (isset($include)) {
    include (sprintf("%s/web-bootstrap.php", dirname(__FILE__)));
}

$stdout = fopen("php://stdout", "w+");

class phpdbg {
    private $sprintf = "%s: %s\n";

    public function isGreat($greeting = null) {
        printf($this->sprintf, __METHOD__, $greeting);
        return $this;
    }
}

function mine() {
    var_dump(func_get_args());
}

function test($x, $y = 0) {
    $var = $x + 1;
    $var += 2;
    $var <<= 3;

    $foo = function () {
        echo "bar!\n";
    };

    $foo();

    yield $var;
}

$dbg = new phpdbg();

var_dump(
    $dbg->isGreat("PHP Rocks!!"));

foreach (test(1,2) as $gen)
    continue;

echo "it works!\n";

if (isset($dump))
    var_dump($_SERVER);

function phpdbg_test_ob()
{
    echo 'Start';
    ob_start();
    echo 'Hello';
    $b = ob_get_clean();
    echo 'End';
    echo $b;
}

$array = [
    1,
    2,
    [3, 4],
    [5, 6],
];

$array[] = 7;

array_walk($array, function (&$item) {
    if (is_array($item))
        $item[0] += 2;
    else
        $item -= 1;
});

class testClass {
    public $a = 2;
    protected  $b = [1, 3];
    private $c = 7;
}

$obj = new testClass;

$test = $obj->a;

$obj->a += 2;
$test -= 2;

unset($obj);