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@ 2014-09-18T09:11:58Z

<?php
$array = array( 'filters'=> array('where'=>array('yr'=>1994)));
$keys = array_keys($array['filters']['where']);
echo array_shift(eval(array_keys($array['filters']['where'])));

Output
Performance
VLD
References
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array_shift: documentation ( source)
array_keys: documentation ( source)

preferences:dark modelive preview

24.12 ms | 402 KiB | 5 Q