gmp_hamdist

(PHP 4 >= 4.0.4, PHP 5, PHP 7)

gmp_hamdistHamming distance

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gmp_hamdist ( GMP $a , GMP $b ) : int

Returns the hamming distance between a and b. Both operands should be non-negative.

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a

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It should be positive.

b

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It should be positive.

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Example #1 gmp_hamdist() example

<?php
$ham1 
gmp_init("1001010011"2);
$ham2 gmp_init("1011111100"2);
echo 
gmp_hamdist($ham1$ham2) . "\n";

/* hamdist is equivalent to: */
echo gmp_popcount(gmp_xor($ham1$ham2)) . "\n";
?>

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6
6

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