[2564] "บักกิเลส" bug-gy/less ตั้งแต่ งวดที่ 3/2 → ...

$z = range(1, 5);
$y = function ($y) {return $y**$y;};
$fn = function ($x, $y, $z) {
    return $x + $y($z);
};
var_export(array_map($fn, 3, $y, $z));

// DON'T TOUCH "MyClass" class
class MyClass {
    private static $variable = 'I am private variable!';
}
echo MyClass::variable;

$before = memory_get_usage();
$time_start = microtime(true);

function render($number) {
	$r = [];
	for ($i = 0; $i < $number; $i++) {
    	$r["name_$i"] = "description_$i";
    }
    return $r;
}

function getRender($render, $key) {
	foreach($render as $k=>$v) {
		if ($k == $key) {
	    	return $v;
	    }
	}
}

$render = render(10000);
echo $render['name_9999'];

$after = memory_get_usage();
echo "<hr>memory usage: ", number_format($after - $before), " bytes<br>";
echo 'execution time: ' . (microtime(true) - $time_start) . ' seconds';

namespace ns1 {
	$x = 1;
}

namespace ns2 {
	$x = 2;
}

namespace {
	$x = 3;
    echo ns1\$x, "<br>";
	echo ns2\$x, "<br>";
    echo $x;
}

namespace FOO;

class Hello {
    public function sayHello() {
        echo 'Hello ';
    }
}

class World {
    public function sayWorld() {
        echo 'World';
    }
}

namespace BAR;

class MyHelloWorld extends \FOO\{Hello, World} {
    public function sayExclamationMark() {
        echo '!';
    }
}

$o = new MyHelloWorld();
$o->sayHello();
$o->sayWorld();
$o->sayExclamationMark();

namespace ns1 {
	const x = 100;
}

namespace ns2 {
	use ns1\x as n100;
	const x = 2;
    function sum(?array $a=[x]) : string {
    	(string)yield (n100 + sum($a)) / x . '%';
    }
}

namespace {
	use ns2\sum;
	echo sum(), "<br>";
    echo sum(null), "<br>";
    echo sum([1, 2, 3]);
}