PHP-检查多维数组中的键是true还是false

Question

I'm trying to set the value of a variable based on three booleans from a multidimensional array but I'm having trouble accessing it. I'm kinda new to PHP and Javascript.

After a var_dump of my form data (passed using $http from angular to an external PHP-file) I'm left with:

array(3) {
  ["selectedServices"]=>
  array(3) {
    ["test"]=>
    bool(true)
    ["test2"]=>
    bool(false)
    ["test3"]=>
    bool(false)
  }
  ["otherstuff"]=>
  string(10) "coolfield"
  ["smsDelRep"]=>
  bool(false)
}

Now I'm trying to create a variable based on "selectedServices" but all attempts so far has failed, I can't even access it.

Currently this is what I have:

$_POST = json_decode(file_get_contents('php://input'), true);

    $selectedServices = array($_POST['selectedServices']);
    if (in_array('test', $selectedServices, true)) {
        $allowedServices = '1';
        var_dump($allowedServices);

But I'm not getting the var_dump so I'm guessing the if-statement returns false. But why?

Answer 1

In_array checks values, not keys, you could do :

if(isset($selectedServices['test']) {
  //
}

EDIT : This is not a perfect solution, if $selectedServices['test'] is null it will not work

Use array_key_exist instead :

if(array_key_exists('test', $selectedServices)) {
  //
}

But there is an error in your code :

 $selectedServices = array($_POST['selectedServices']);

should be

$selectedServices = $_POST['selectedServices'];