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<?php $array = [ ['Walter', 'White'], ['Marie', 'Schrader'], ['Marie', 'Schrader'], ['Hank', 'Schrader'], ]; var_export( array_unique($array, SORT_REGULAR) );
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.24, 8.2.0 - 8.2.11
array ( 0 => array ( 0 => 'Walter', 1 => 'White', ), 1 => array ( 0 => 'Marie', 1 => 'Schrader', ), 3 => array ( 0 => 'Hank', 1 => 'Schrader', ), )
preferences:
23.58 ms | 405 KiB | 5 Q