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<?php $array1 = array ( '4' => array ( 'banner_id' => '4', 'viewsCount' => '33', 'date' => '2015-06-19' ) ); $array2 = array ( '4' => array ( 'banner_id' => '4', 'clicksCount' => '5', 'date' => '2015-06-19' ) ); print_r (array_merge_recursive($array1, $array2));

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