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This is available as Math\base_convert in the www repository.

Converts the given string in base $from_base to base $to_base, assuming letters a-z are used for digits for bases greater than 10

namespace HH\Lib\Math;

function base_convert(
  string $value,
  int $from_base,
  int $to_base,
): string;

The conversion is done to arbitrary precision.


  • string $value
  • int $from_base
  • int $to_base


  • string


$result1 = Math\base_convert("30", 10, 16);
echo "30 in base 10 is $result1 in base 16 \n";

$result2 = Math\base_convert("2f", 16, 10);
echo "2f in base 16 is $result2 in base 10 \n";

$result3 = Math\base_convert("1111", 2, 16);
echo "1111 in base 2 is $result3 in base 16 \n";