What potential issues can arise when performing bitwise operations on large numbers in PHP?

Performing bitwise operations on large numbers in PHP can lead to unexpected results due to integer overflow. To solve this issue, you can use the `gmp` extension in PHP which provides arbitrary precision arithmetic functions for working with large numbers. 

$largeNumber1 = gmp_init("123456789012345678901234567890");
$largeNumber2 = gmp_init("987654321098765432109876543210");

$result = gmp_and($largeNumber1, $largeNumber2);

echo gmp_strval($result);

Keywords

PHP bitwise operations large numbers integer overflow bitwise shift.

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