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Question 7
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How do you merge two arrays $array1 = [1, 2, 3]; and $array2 = [4, 5, 6];?
$merged = $array1 + $array2;
$merged = array_merge($array1, $array2);
$merged = array_combine($array1, $array2);
$merged = array_intersect($array1, $array2);
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