ns)`, but checks first, if the index exists.</h4>
        <p/>
        <ul/>
        <h2 id="signature">Signature</h2>
        <div class="styled synopsis">
          <code>public function checkAndSanitizeInput(string
        $field,
            array&amp;
        $inputArray,
            array
        $inputKeys,
            [integer
        $flags = 0,
            [array
        $options = null]] )
            </code>
        </div>
        <h2 id="parameterlist">Parameters</h2>
        <dl class="styled