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<?php $array = array( 0 => array( 0 => 'My Property', 1 => array( 0 => 'Tiles Market', 1 => 'My Floor' ) ) ); $result = call_user_func_array('array_merge', $array); var_dump($result);
Output for 4.3.0 - 7.1.0
array(2) { [0]=> string(11) "My Property" [1]=> array(2) { [0]=> string(12) "Tiles Market" [1]=> string(8) "My Floor" } }