What potential pitfalls should be considered when comparing two arrays in PHP?

When comparing two arrays in PHP, one potential pitfall to consider is that using the `==` operator may not give the desired result as it only compares values and not keys. To accurately compare two arrays, you should use the `===` operator to ensure both the values and keys are identical. 

$array1 = [1, 2, 3];
$array2 = [1, 2, 3];

if ($array1 === $array2) {
    echo "The arrays are identical.";
} else {
    echo "The arrays are not identical.";
}

Keywords

array_diff array_intersect strict comparison associative arrays multidimensional arrays

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