1.2.1186. This Could Be Iterable

An argument that is both array and traversable <https://www.php.net/`traversable>`_ may be typed iterable. Iterable is a more generic type than array, and allows the usage of iterators too.

<?php

// parameter and return type might be iterable
function foo($a) {
    foreach($a as $b) {
     // do something
    }

    return $a;
}

class x {
     private $b;

     function foo() {
     foreach($this->b as $c) {
             // do something
         }
     }
}

?>

See also iterable.

1.2.1186.1. Suggestions

• Add the iterable typehint

1.2.1186.2. Specs

Short name	Classes/CouldBeIterable
Rulesets	All, Changed Behavior, Suggestions, Typechecks
Exakat since	2.3.3
PHP Version	With PHP 7.1 and more recent
Severity	Minor
Time To Fix	Quick (30 mins)
Precision	High
Features	iterable
Available in	Entreprise Edition, Exakat Cloud