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@ 2015-04-21T08:01:24Z

<?php

$ar = array("re" => 12, "er" => array('rt' => 55,'tt' => 66), "rt" => 66 );

while (key($ar) != "er") {
    next($ar);
} 

echo next($ar)['tt'];

Output
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key: documentation ( source)
next: documentation ( source)

preferences:dark modelive preview

41.65 ms | 402 KiB | 5 Q