/**
* @test
*/
public function itShouldGetValidModulus()
{
$this->assertEquals(my_bcmod("7044060001970316212900", 150), "50");
}
function dec2string($decimal, $base)
{
global $charset;
// convert a decimal number into a string using $base
$string = null;
$base = (int) $base;
$charset_size = strlen($charset);
// echo 'BASE must be in the range 2-9 or 11-62';
if ($base < 2 | $base > $charset_size) {
return false;
}
if ($base == 10) {
return $decimal;
}
// strip off excess characters (anything beyond $base)
$charset_local = substr($charset, 0, $base);
// $error['dec_input'] = 'Value must be a positive integer with < 80 digits we are using bcmod!';
if (!is_numeric(trim($decimal))) {
return false;
}
// || strlen(trim($decimal))>80) return false;
do {
// get remainder after dividing by BASE
$remainder = my_bcmod($decimal, $base);
$char = substr($charset_local, $remainder, 1);
// get CHAR from array
$string = "{$char}{$string}";
$decimal = bcdiv(bcsub($decimal, $remainder), $base);
} while ($decimal > 0);
return $string;
}
function bcmod($x, $y)
{
return my_bcmod($x, $y);
}