Александр

$data = ['row1', 'row2', 'row3', 'row4', 'row5'];
$countToDelete = 3;

$i = 0;
foreach ($data as $index => $value) {
	unset($data[$index]);

	if ($i >= $countToDelete - 1) {
		break;
	}
	$i++;
}

var_dump($data);
/*
array(2) {
  [3]=>
  string(4) "row4"
  [4]=>
  string(4) "row5"
}
*/

$data = ['row1', 'row2', 'row3', 'row4', 'row5'];
$countToDelete = 3;

$filtered = array_filter($data, function ($value) use (&$countToDelete) {
	return $countToDelete-- <= 0;
});

var_dump($filtered);
/*
array(2) {
  [3]=>
  string(4) "row4"
  [4]=>
  string(4) "row5"
}
*/

$data = [
    'Hi' => 1,
    'D' => [
        'type' => 'xz',
        'anything' => $any2
    ],
    'Any' => [
        [
            'type' => 'xz',
            'anything' => $any2
        ]
    ],
    'Anything' => [],
    'Minus' => [
        'Content',
        'Content'
    ],
    'Block' => [
        'dog' => "Hello-$hello2",
        'cat' => '',
        'parrot' => ''
    ]
];

if ($content != $content2) {
    $data['Anything'][] = [
        'block1' => $block2
    ];
}

$response = json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
// $response = base64_encode($response);

echo $response;

foreach ($removed as $value) {
   print_r($value);
}