如果我在函数中使用json_encode，它会删除一个数组

I don't know why but json_encode output has only an array in my second example.

Here is my codes:

$example1 = json_encode(array("inline_keyboard" => array(array(array("text" => "Google", "url" => "http://google.com")),array(array("text" => "test", "callback_data" => "test")))));

$example2 = inkeyboard(array(array("text" => "Google", "url" => "http://google.com")),array(array("text" => "test", "callback_data" => "test")));


function inkeyboard($array){
    $keyboard   = array($array);

    $resp       = array("inline_keyboard" => $keyboard);
    $reply      = json_encode($resp);

    return $reply;
}

and output is like this:

Example 1 output:

 {"inline_keyboard":[[{"text":"Google","url":"http:\/\/google.com"}],[{"text":"test","callback_data":"test"}]]}

Example 2 output:

{"inline_keyboard":[[{"text":"Google","url":"http:\/\/google.com"}]]}

they should be same. what is happening?

With example1 you pass one array: ["inline_keyboard" => [[["text" => "Google", "url" => "http://google.com"]],[["text" => "test", "callback_data" => "test"]]]]

With example2, your are actually passing two arguments to the function inkeyboard. One of them being [["text" => "Google", "url" => "http://google.com"]], the second one [["text" => "test", "callback_data" => "test"]].

It would work correctly, if you change example2 to:

$example2 = inkeyboard(array(array("text" => "Google", "url" => "http://google.com"),array(array("text" => "test", "callback_data" => "test"))));