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@ 2013-11-20T13:04:16Z

<?php
$input = array( 'AND' => 1, 'OR' => 2 );
echo '"', current( array_keys( $input ) ), '"';

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

preferences:dark modelive preview

42.93 ms | 402 KiB | 5 Q