’t valid</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">NULL on failure or the array item.</p>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p>
</td>
</tr>
</tbody>
</table>
<p>Lets you fetch an item from an array. The function tests whether the
array index is set and whether it has a value. If a value exists it is
returned. If a value does 