Problem with POST and VK api. Why can't I contact VK api?

Question

PHP

We have this code:

$text .= "
Поступила новая заявка на разблокировку! \r\n";
$text .= "Забаненный: vk.com/id".$_POST['id']." \r\n";
$text .= "Забанен: vk.com/id".$_POST['admin_id']." \r\n";
$is = 'https://api.vk.com/method/messages.send?access_token=токен&chat_id=1&message='.$text;
$is = json_decode(file_get_contents($is),true);
print_r($is);

After calling the VK api, the api returns an error:

[error_code] => 100
[error_msg] => One of the parameters specified was missing or invalid: message is empty or invalid

while further:

[4] => Array
                        (
                            [key] => message
                            [value] => 
                        )

But I kind of set the value to $text and....what's the problem? :) I tried to change single quotes to double ones and remove the line break \r\n.

Answer 1

And if so?

$is = 'https://api.vk.com/method/messages.send?access_token=токен&chat_id=1&message='.urlencode($text);