PHP 7.4 - Warning: count(): Parameter must be an array

Question

I just upgraded my PHP Version from 5.6 to 7.4. I used count() function in my page, example:

$watch_server_count  = count($watch_server);
if ($watch_server_count > 0) {
    foreach ($watch_server->table as $key=> $watch_server_rows) {

    }
}

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

$watch_server is an object, not an array, hence the $watch_server->.... Did you mean $watch_server_count = count($watch_server->table); ? This would make sense since you are iterating this property — Cid
– Cid, Commented May 12, 2020 at 6:54
object(ShinoDB)#6137 (3) { ["error"]=> NULL ["filename"]=> string(187) "OK^ok.ru/videoembed/963440478908 Vidbom^vidbm.com/embed-qx0qzffbptht.html Vevio^vev.io/embed/k4rdekk1q2o1 Vidshare^vidshare.tv/embed-l8w79d88qq1v.html" ["table"]=> array(4) { [0]=> array(2) { [0]=> string(2) "OK" [1]=> string(37) "ok.ru/videoembed/963440478908" } } } — user4158643
– user4158643, Commented May 12, 2020 at 6:57
Does this answer your question? count(): Parameter must be an array or an object that implements Countable error in php — compuphys
– compuphys, Commented May 12, 2020 at 8:30

Mehmet Coban · Accepted Answer · 2020-08-12 14:36:12Z

1

You can try this way. is_countable

https://www.php.net/manual/en/function.is-countable.php

if ( is_countable($watch_server->table) ) {
    foreach ($watch_server->table as $key=> $watch_server_rows) {
        ...
    }
}

answered Aug 12, 2020 at 14:36

Mehmet Coban

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1 Comment

Nico Haase Over a year ago

Hi Mehmet, welcome to Stackoverflow. If you post an answer, please check whether there are already other answers covering the same code. In this case, there's another answer from Redy S. Additionally, your answer might be wrong, as not all objects that implement the Countable interface provide the neccessary methods to iterate

Redy S · Accepted Answer · 2020-05-26 10:06:11Z

0

Since PHP 7.1, you can use is_iterable before performing foreach.

(PHP 7 >= 7.1.0) is_iterable — Verify that the contents of a variable is an iterable value

https://www.php.net/manual/en/function.is-iterable.php

So the code will look like this:

if ( is_iterable($watch_server->table) ) {
    foreach ($watch_server->table as $key=> $watch_server_rows) {
        //
    }
}

edited May 26, 2020 at 10:06

answered May 26, 2020 at 9:26

Redy S

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