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PHP : Function Reference : GMP Functions : gmp_hamdist

gmp_hamdist

Hamming distance (PHP 4 >= 4.0.4, PHP 5)
int gmp_hamdist ( resource a, resource b )

Example 793. gmp_hamdist() example

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<?php

$ham1 = gmp_init("1001010011", 2);
$ham2 = gmp_init("1011111100", 2);

echo gmp_hamdist($ham1, $ham2) . "\n";

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

The above example will output:

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6

6

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