count(): Parameter must be an array or an object that im plements Countable error based on the array size

Question

This error is generated in the code below only when the returned array is too long. With short arrays (I do not know exactly how much) does not occur.

$phone_numbers = array();
if(!empty($_POST['phone_numbers']))
    $phone_numbers = json_decode($_POST['phone_numbers']);
    $phone_numbers_var = str_repeat('?,', count(json_decode($_POST['phone_numbers'])) - 1) . '?'; // <-- error line

Is there a limit to the count () parameter?

Why don't you use `count` on the `$phone_numbers` instead of `json_decode` twice? And no, there is no limit on `count` — dWinder, Jun 26 '19 at 20:39
Unless it was double encoded, the second decode will return null regardless of the array size. — Don't Panic, Jun 26 '19 at 21:18
Possible duplicate of [count(): Parameter must be an array or an object that implements Countable](https://stackoverflow.com/questions/48343557/count-parameter-must-be-an-array-or-an-object-that-implements-countable) — miken32, Jun 26 '19 at 22:13

Renziito · Accepted Answer · 2019-06-26T21:31:52.273

2

First check you $_POST['phone_numbers'] what is getting

remember that :

var_dump(count(null));var_dump(count(false));

will output :

Warning: count(): Parameter must be an array or an object that implements Countable in

I think is the PHP version 7.2's count is a little weird... but you can try something like this :

https://wiki.php.net/rfc/counting_non_countables

EDIT :

For just comment :

$POST['phone_numbers'] = [165567, 545675, 655666];

if you try to do this:

json_decode($POST['phone_numbers']);

will return this :

WARNING json_decode() expects parameter 1 to be string, array given on line number 4

and count of that... you know .. just do:

count($POST['phone_numbers']);

edited Jun 26 '19 at 21:31

answered Jun 26 '19 at 20:55

Renziito

78
3

$phone_numbers returns [165567, 545675, 655666, ..., n] – afazolo Jun 26 '19 at 21:16
@afazolo so do the `count` on him and not on the decode of the `POST` – dWinder Jun 26 '19 at 21:24
The problem appears to occur due to the integrity of the returned data. Thaks for the help. – afazolo Jun 26 '19 at 22:01

score 0 · Answer 2 · answered Jun 26 '19 at 22:47

Is funny but it seems that if in the array there is some digit starting with 0 the error occurs. When I remove the initial 0 is ok.

 $phone_numbers = [011364346387, 33334444, ..., n] //error
 $phone_numbers = [11364346387, 33334444, ..., n] //is ok!

count(): Parameter must be an array or an object that im plements Countable error based on the array size

2 Answers2