PHP merge two 1D arrays

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 'zero_a' , 2 => 'two_a' , 3 => 'three_a' ); $array2 = array( 1 => 'one_b' , 3 => 'three_b' , 4 => 'four_b' ); $result = $array1 + $array2 ; var_dump ( $result ); ?>

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