getRecursive example


    public function isValid($value)
    {
        $this->_setValue($value);
        if ($this->getRecursive()) {
            $iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($this->_haystack));
            foreach($iterator as $element) {
                if ($this->_strict) {
                    if ($element === $value) {
                        return true;
                    }
                } else if ($element == $value) {
                    return true;
                }
            }
        } else {
            
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