Core/Toolbox/Arrays/IsAssoc.php
public function isAssoc(): bool
    {
        if (empty($this->array)) {
            return false;
        }

        return (bool) count(array_filter(array_keys($this->array), 'is_string'));
    }
public function isAssoc(): bool
    {
        if (empty($this->array)) {
            return false;
        }

        return (bool) count(array_filter(array_keys($this->array), 'is_string'));
    }
Checks a value whether to be an array, if its empty and when not an empty array if it's an associative one.

@return bool