How to take the current key from array? PHP
<p>I want to take the current key in the array.
I know the function current($array) but it take the value.</p>

<p>Rules:</p>

<ol>
<li>I cannot use in any loop.</li>
<li>Without array_flip().</li>
<li>I need function.. if you can mix the function current($array) it'll be great!</li>
</ol>

<p>Thank you.</p>
