<?php $arr = array( 'této' => array( 'foo' => 'foofoo', 'bar' => 'barbar', ), 'titi' => array( 'foo' => 'foofoo', 'bar' => 'barbar', ), ); var_dump(array_keys($arr)); var_dump(in_array('této', $arr)); var_dump(in_array('této', array_keys($arr)));
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